Patent Application
20190076597
The present disclosure relates to connection interfaces for syringes and reservoirs and, in particular embodiments, to connection interfaces for interfacing a syringe or reservoir to an infusion pump, infusion set tubing, or both. Further embodiments relate to infusion pump systems and infusion set systems that include such connection interfaces, and to methods that employ the same.
Infusion pump devices and systems are used in medical contexts, to deliver or dispense infusion media to patients, where such infusion media may be, for example, a prescribed medication such as insulin, a cancer therapy drug, an HIV therapy drug or other media for treating a medical or biological condition. In one form, such infusion pump devices have a relatively compact pump housing adapted to receive a syringe or reservoir that contains a prescribed medication for administration to a patient.
Infusion pump devices typically include a small drive motor connected through a drive linkage to a piston in the syringe or reservoir. The drive motor operates to selectively move the piston within the syringe or reservoir, to drive fluidic media from the reservoir and to the user. Programmable controls are normally provided for operating the drive motor continuously or at periodic intervals to obtain a controlled delivery of the medication over a period of time. Such infusion pumps are utilized to administer insulin and other medications, with exemplary pump constructions being shown and described in U.S. Pat. Nos. 4,562,751; 4,678,408; 4,685,903; 5,080,653 and 5,097,122, each of which is incorporated by reference herein, in its entirety.
Infusion sets are tubing and connection apparatus that provide a fluid flow path for infusion media to flow from the reservoir or syringe in the pump to the user. Connectors for attaching the infusion set tubing to the reservoirs can take various forms. Some examples of such connectors are described in U.S. Pat. No. 6,585,695, which is incorporated by reference herein, in its entirety.
Nevertheless, it remains desirable to develop improved designs of connection methods to facilitate infusion procedures and to provide suitable interface connections that provide additional features for ease of use and manufacture, and other advantages.
Connection interfaces for syringes and reservoirs are configured for interfacing a syringe or reservoir to an infusion pump, infusion set tubing, or both. Infusion pump systems include infusion pump devices, infusion sets and connection interfaces that connect the infusion pump devices with the infusion sets. In particular embodiments, the connection interfaces include a cap configured to be secured to a reservoir to form a reservoir/cap unit (or base/reservoir/cap unit) that is configured to be installed within a reservoir receptacle of an infusion pump device. In particular embodiments, the cap includes a first releasable coupler and a second releasable coupler, where the first releasable coupler releasably attaches the cap to the reservoir (or to a base fixed to the reservoir) to form the reservoir/cap unit (or base/reservoir/cap unit), while the second releasable coupler releasably attaches the cap to the infusion pump device.
In particular embodiments, at least one detectable feature is arranged on the cap or the reservoir for detection by at least one sensor element when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. The sensor element may be any one or more of a magnetic detection sensor, an inductive sensor, an RF sensor, a mechanical detection sensor, an optical sensor or an electronic contact sensor. Similarly, the detectable feature may be any one or more of a magnetically detectable feature, an inductively detectable feature, an RF detectable feature, a mechanically detectable feature, on optically detectable feature and an electronic contact detectable feature.
Also, particular embodiments relate to particular second releasable couplers configured to releasably attach the cap to the infusion pump device that, in further embodiments, are employed with any one or more of the embodiments that employ detectable features. Yet other embodiments relate to reservoir filling systems and processes including or employing transfer guards for filling reservoirs that, in further embodiments, are reservoirs to which a cap secures to form a reservoir/cap unit (or base/reservoir/cap unit).
An infusion pump system according to an embodiment of the present invention includes an infusion pump device to receive a reservoir containing infusion media and to selectively dispense the infusion media from the reservoir when the reservoir is inserted and secured in an infusion pump housing of the infusion pump device. The infusion pump system according to such embodiment also includes at least one sensor element held by the infusion pump device, and a connector interface to connect the reservoir with the infusion pump device, where the connector interface includes a cap to connect to the reservoir to form a reservoir/cap unit. The infusion pump system according to such embodiment also includes at least one detectable feature arranged on the reservoir/cap unit for detection by the at least one sensor element on the infusion pump device when the cap is aligned or coupled with the infusion pump housing.
An infusion pump system according to an embodiment of the present invention includes an infusion pump device to receive a reservoir containing infusion media and to selectively dispense the infusion media from the reservoir when the reservoir is inserted and secured in an infusion pump housing of the infusion pump device; at least one sensor element held by the infusion pump device; a connector interface to connect the reservoir with the infusion pump device, the connector interface including a cap to connect to the reservoir to form a reservoir/cap unit; and at least one detectable feature arranged on the reservoir/cap unit for detection by the at least one sensor element on the infusion pump device when the cap is aligned or coupled with the infusion pump housing.
In particular embodiments, the at least one detectable feature is a magnet or a magnetic strip. In particular embodiments, the at least one detectable feature is an inductively detectable member. In particular embodiments, the at least one detectable feature is a radio frequency (RF) detectable device. In particular embodiments, the at least one detectable feature is a mechanically detectable feature. In particular embodiments, the at least one detectable feature is an optically detectable feature.
In particular embodiments, the connector interface further includes a twist-lock with push button release feature. In particular embodiments, the connector interface further includes a rotatable ring lock and release feature. In particular embodiments, the connector interface further includes a pawl push-in lock with pinch release feature. In particular embodiments, the connector interface further includes a slot and tab connection feature. In particular embodiments, the connector interface further includes a spring connection feature.
In particular embodiments, the infusion pump system includes a side-loading reservoir receptacle.
In particular embodiments, the connector interface further includes a vent on the cap or on the infusion pump device.
In particular embodiments, the at least one sensor element and the at least one detectable feature are configured such that detection is by one or more of magnetic effects, inductive effects, RF or RFID interaction, mechanical interaction, optical effects, and electrical contact.
An infusion pump system according to a further embodiment of the present invention includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, where infusion pump device includes at least one magnetic detection sensor element. The infusion pump system embodiment further includes a connector interface system for connecting the reservoir with the infusion pump device. In particular embodiments, a connector interface system includes a cap configured to connect to the reservoir to form a reservoir/cap unit, and where at least one magnetic detectable feature is arranged on the cap or the reservoir for detection by the at least one sensor element when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. In further embodiments, the connector interface system includes the reservoir to be received within the reservoir receptacle of the infusion pump device, where the reservoir contains or is to contain infusion media to be selectively dispensed from the reservoir when the reservoir is received within the reservoir receptacle. In further embodiments, the connector interface system includes an infusion set coupled to the cap via a tubing for conveying infusion media dispensed from the reservoir.
A connector interface system according to an embodiment of the present invention includes a cap to connect to a reservoir to form a reservoir/cap unit for installation into an infusion pump device. At least one magnetic detectable feature is arranged on the cap for detection by at least one sensor element on the infusion pump device when the reservoir of the reservoir/cap unit is received in a reservoir receptacle of the infusion pump device, where the at least one magnetic detectable feature includes a magnet that is attached to a housing of the cap.
A connector interface system according to further embodiments of the present invention includes a reservoir to be received within a reservoir receptacle of an infusion pump device, the reservoir to contain infusion media to be selectively dispensed from the reservoir when the reservoir is received within the reservoir receptacle. The connector interface systems according to such further embodiments also include a connector interface to connect the reservoir with the infusion pump device, the connector interface including a cap to connect to the reservoir to form a reservoir/cap unit. The connector interface systems according to such further embodiments also includes an infusion set coupled to the cap via a tubing for conveying infusion media dispensed from the reservoir, and at least one magnetic detectable feature arranged on the cap for detection by at least one sensor element on the infusion pump device when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. The at least one magnetic detectable feature includes a magnet that is attached to a housing of the cap.
The use of a magnet in the cap helps with the automatic detection of whether the reservoir is fully secured in the pump. Once secured infusion can start. If the reservoir subsequently works loose, infusion can be interrupted and an alarm sounded. In a preferred embodiment an infusion pump for a medication fluid includes a receptor for a reservoir of the medication fluid; a first replaceable reservoir positionable within the reservoir receptor, said reservoir having: a cap which, when the replaceable reservoir is within the reservoir receptor, is rotatable with respect to the infusion pump from a first position where the reservoir is locked within the receptor, and a second position where the reservoir may be removed from the reservoir receptor; a magnet situated on the cap; a sensor in the infusion pump configured to produce the signal dependent on detected magnetic field; the magnet and the sensor being positioned so that the detected magnetic field when the cap is in the first position differs from the magnetic field when the cap is in the second position; circuitry connected to the sensor to determine from the signal whether the reservoir is in the first position (locked) or the second position (worked loose or undone for removal). The aspect of the magnetic field that is sensed may be any of magnetic field strength, magnet field polarity or magnet field direction or any combination thereof, such as magnetic field strength in a particular direction.
The magnet and sensor may be positioned to be adjacent when the cap is in the first position, and separated when the cap is in the second position; and said circuitry is configured such that the cap is indicated as being in the first position when the magnetic field strength at the sensor exceeds a first threshold value.
Various alternatives are possible including one in which the sensor includes two magnetic detectors and the circuitry detects the first position when the field strength detected by the first detector is equal to the field strength detected by the second detector indicating that the magnet is equidistant from the first and second magnetic detectors. This arrangement can even be combined with the first such that a first detector detects a first magnet by its field strength maximum to indicate its proximity and the other two detect a position of equal field strength. In such an arrangement the cap has two magnets disposed with an angular separation with respect to the axis of the cap and the infusion pump has three sensors, the first of which is positioned adjacent the magnet when the cap is in the first position and separated when the cap is in the second position and the second and third sensors being positioned to be angularly equidistant from the second magnet when the cap is in the first position, and the circuitry is arranged to detect the first position when the magnetic field strength exceeds a first threshold value as detected by the first sensor and when the magnetic field strength as detected by the second and third sensor are equal. In a further development the cap has three magnets spaced at an angle θ and the infusion pump has four sensors, a first being positioned adjacent a first sensor when the cap is in the first position; the sensors being spaced at an angle θ, the magnets being positioned with respect to the first magnet at angles of a half (2n+1) θ, where n represents consecutive integers 1, 2, 3, etc., and said magnets alternate in polarity for successive values of n; said circuitry being arranged to detect the first position when the magnetic field strength detected by the first sensor is a maximum, and the sum of the magnetic field strength for the other sensors equals zero.
In these arrangements the pump can be made to distinguish between one reservoir and a different reservoir, say with a different insulin, and requiring different dosing by including a second replaceable reservoir positionable within the reservoir receptor in place of the first replaceable reservoir, wherein the magnets of the first and second replaceable reservoirs all have respective opposite polarities, the sensor being arranged to be able to detect the opposite polarity when the second replaceable reservoir is in the first position, the circuitry being configured to indicate that the second replaceable reservoir is in the infusion pump rather than the first replaceable reservoir.
In particular embodiments, the at least one magnetic detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula. In particular embodiments, the association is provided in a table or other data arrangement.
In particular embodiments, the one or more characteristics includes one or more of: a type or identity of a manufacturer of the reservoir or the cap; a size of the reservoir or the cap; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date, or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir or the cap; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap was made, assembled, or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, or the cap is authorized to be used; a lot number or code associated with a batch in which the reservoir, the cap, or infusion media was made, cleaned, filled, or otherwise processed; a serial number; a unique ID; user identification information for authorized users; a type, length, or size of the cannula; or a type, length, or size of the tubing connected between the cap and the cannula.
In particular embodiments, the at least one detectable parameter of the magnetic detectable feature includes one or more of: proximity of the at least one magnetic detectable feature, polarity direction of the at least one magnetic detectable feature, field strength of the at least one magnetic detectable feature, location on the cap of the at least one magnetic detectable feature, or pattern of locations on the cap of a plurality of magnetic detectable features.
In particular embodiments, the at least one magnetic detectable feature has a first polarity direction arranged to saturate the at least one sensor element in a first saturation state when the reservoir of the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, or a second polarity direction arranged to saturate the at least one sensor element in a second saturation state when the reservoir of the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, the first saturation state being opposite to the second saturation state.
In particular embodiments, the at least one magnetic detectable feature includes a compass sensor detectable feature having a detectable resolution associated with one or more predefined characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
In particular embodiments, the at least one magnetic detectable feature includes a plurality of magnets arranged at different respective locations on the cap.
In particular embodiments, the at least one magnetic detectable feature includes a plurality of magnetic detectable features in locations that allow the magnetic detectable features to magnetically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
In particular embodiments, the cap includes at least one thread arranged to engage a corresponding thread or groove in the infusion pump device when the reservoir/cap unit is received in the reservoir receptacle in the infusion pump device, wherein the at least one magnetic detectable feature is located on the at least one thread.
In particular embodiments, the at least one magnetic detectable feature includes a magnetic field angle associated with one or more predefined characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
In particular embodiments, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap. This magnetic field can be independent of a shape of the magnet used to produce it.
In particular embodiments, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, wherein the angle β is between 5° to 85°, 95° to 175°, 185° to 265°, or 275° to 355° relative to the side of the cap.
In particular embodiments, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, wherein the angle β is between 2.5° to 87.5°, 92.5° to 177.5°, 182.5° to 267.5°, or 272.5° to 357.5° relative to the side of the cap.
In particular embodiments, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, the angle β is between 10° to 80°, 100° to 170°, 180° to 260°, or 285° to 350° relative to the side of the cap.
In particular embodiments, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, wherein angle β is set to provide a three-dimensional magnetic field angle α relative to the side of the cap.
In particular embodiments, the at least one magnetic detectable feature includes two or more magnets included in the cap, wherein each magnet has its own magnetic field set at an independently set angle β relative to a side of the cap.
In particular embodiments, the at least one magnetic detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula, wherein as the cap is rotated into the infusion pump device, the two or more magnets create a magnetic field sequence that uniquely identifies the one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
In particular embodiments, the infusion set further includes a cannula, and the at least one magnetic detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cannula or the tubing of the infusion set.
In particular embodiments, the characteristic of the cannula or the tubing of the infusion set includes a size or length of the cannula, or a size or length of the tubing.
An infusion pump system according to embodiments of the present invention includes an infusion pump device having a reservoir receptacle to receive a reservoir containing infusion media and to selectively dispense the infusion media from the reservoir when the reservoir is received within the reservoir receptacle. The infusion pump system embodiments further include at least one sensor element held by the infusion pump device, and a connector interface to connect the reservoir with the infusion pump device, where the connector interface includes a cap to connect to the reservoir to form a reservoir/cap unit. The infusion pump system embodiments further include at least one magnetic detectable feature arranged on the cap for detection by the at least one sensor element on the infusion pump device when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device, where the at least one magnetic detectable feature includes a magnet that is attached to a housing of the cap.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature has at least one detectable parameter that is associated with one or more characteristics of a cannula or a tubing of an infusion set associated with the connector interface.
In particular embodiments of the infusion pump system, the characteristic of the cannula or the tubing of the infusion set includes a size or length of the cannula, or a size or length of the tubing.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, the reservoir, or a tubing connected between the cap and a cannula.
In particular embodiments of the infusion pump system, the at least one detectable parameter includes one or more of: proximity of the at least one magnetic detectable feature, polarity direction of the at least one magnetic detectable feature, field strength of the at least one magnetic detectable feature, location on the cap of the at least one magnetic detectable feature, or pattern of locations on the cap of a plurality of magnetic detectable features.
In particular embodiments of the infusion pump system, the at least one sensor is configured to be saturated in a first saturation state when the reservoir of the reservoir/cap unit having a magnetic detectable feature of a first polarity direction is fully received in the reservoir receptacle of the infusion pump device, and wherein the at least one sensor is configured to be saturated in a second saturation state when the reservoir of the reservoir/cap unit having a magnetic detectable feature of a second polarity direction is fully received in the reservoir receptacle of the infusion pump device, the first saturation state being opposite to the second saturation state, and the first polarity direction being opposite to the second polarity direction.
In particular embodiments of the infusion pump system, in the one or more characteristics includes one or more of: a type or identity of a manufacturer of the reservoir or the cap; a size of the reservoir or the cap; a type or concentration of the infusion media in the reservoir; a volume amount of the infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date, or fill date related to the infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir or the cap; a location corresponding to a place where the reservoir or the infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap was made, assembled, or otherwise processed; a location corresponding to a place where the reservoir, the infusion media in the reservoir, or the cap is authorized to be used; a lot number or code associated with a batch in which the reservoir, the cap, or the infusion media was made, cleaned, filled, or otherwise processed; a serial number; a unique ID; user identification information for authorized users; a type, length, or size of the cannula; or a type, length, or size of the tubing connected between the cap and the cannula.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a compass sensor detectable feature having a detectable resolution associated with one or more predefined characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a plurality of magnets arranged at different respective locations on the cap.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a plurality of magnetic detectable features in locations that allow the magnetic detectable features to magnetically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
In particular embodiments of the infusion pump system, the at least one sensor is configured to detect a magnetic field angle of the at least one magnetic detectable feature, the magnetic field angle being associated with one or more predefined characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap and independent of a shape of the magnet to produce an angled magnetic field at the angle β.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, wherein the angle β is between 5° to 85°, 95° to 175°, 185° to 265°, or 275° to 355° relative to the side of the cap.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, wherein the angle β is between 2.5° to 87.5°, 92.5° to 177.5°, 182.5° to 267.5°, or 272.5° to 357.5° relative to the side of the cap.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, the angle β is between 10° to 80°, 100° to 170°, 180° to 260°, or 285° to 350° relative to the side of the cap.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes a magnetic field that is inclined at an angle β relative to a side of the cap, wherein angle β is set to provide a three-dimensional magnetic field angle α relative to the side of the cap.
It is preferred to set the magnet in the side of the cap such that the North-South magnetic field direction lies in the wall of the cap, is at an angle with and intersects the plane containing the axis of the cap, i.e. skew and on the side of the cap. It is also possible however to orient the magnetic field so that it lies in the surface of a hypothetical cone coaxial with the cap i.e. tilt, with or without the skew. The sensor would then be arranged to detect the field direction and interpret it as the characteristics discussed above. In either case it is preferable not to orient the magnetic field directly parallel or transverse to the axis of the cap.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature includes two or more magnets included in the cap, wherein each magnet has its own magnetic field set at an independently set angle β relative to a side of the cap.
In particular embodiments of the infusion pump system, the at least one magnetic detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula, wherein as the cap is rotated into the infusion pump device, the two or more magnets create a magnetic field sequence that uniquely identifies the one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
A further option in these arrangements is to provide electronics coupled to the output of the sensor, which defines a first threshold of magnetic field detection indicating that the reservoir cap combination is in the vicinity of the infusion pump. This first threshold could simply be triggered by the detection of a given minimum magnetic field strength. A second threshold of magnetic field detection would indicate that the reservoir/cap unit is secured in place on the pump. This could either be determined by a maximum in magnetic field strength, either with a particular orientation or regardless of orientation. A third criterion could then be derived from the detected field angle when the cap is in place, with different measured angle representing different characteristics, as discussed above. These characteristics can be fed to the pump to determine operation, or to determine that the reservoir/cap combination is unauthorized or unsuitable for use with that pump, in which case the pump would shut down and/or an audible or visual warning be given.
An infusion pump system for a medication fluid according to further embodiments of the present invention includes a receptacle for a reservoir of the medication fluid and a first replaceable reservoir positionable within the reservoir receptacle. In such embodiments, the reservoir has a cap which, when the replaceable reservoir is within the reservoir receptacle, is rotatable with respect to the infusion pump from a first position where the reservoir is locked within the receptacle, and a second position where the reservoir may be removed from the reservoir receptacle. Such embodiments include a magnet situated on the cap and a sensor in the infusion pump configured to produce the signal dependent on detected magnetic field. The magnet and the sensor are positioned so that the detected magnetic field when the cap is in the first position differs from the magnetic field when the cap is in the second position. Such embodiments include circuitry connected to the sensor to determine from the signal whether the reservoir is in the first position or the second position.
In particular embodiments, the magnet and sensor are positioned to be adjacent when the cap is in the first position, and separated when the cap is in the second position, and the circuitry indicates that the cap is in the first position when the magnetic field strength exceeds a first threshold value.
In particular embodiments, the circuitry is configured to indicate that the reservoir is in the reservoir receptacle irrespective of whether the cap is in the first or second position when the magnetic field strength exceeds a second threshold value lower than the first threshold value.
In particular embodiments, the sensor includes two magnetic detectors and the circuitry detects the first position when the field strength detected by the first detector is equal to the field strength detected by the second detector indicating that the magnet is equidistant from the first and second magnetic detectors
In particular embodiments, the cap has two magnets disposed with an angular separation with respect to the axis of the cap and the infusion pump has three sensors, the first of which is positioned adjacent the magnet when the cap is in the first position and separated when the cap is in the second position and the second and third sensors being positioned to be angularly equidistant from the second magnet when the cap is in the first position, and the circuitry is arranged to detect the first position when the magnetic field strength exceeds a first threshold value as detected by the first sensor and when the magnetic field strength as detected by the second and third sensor are equal.
In particular embodiments, the cap has three magnets spaced at an angle θ and the infusion pump has four sensors, a first being positioned adjacent a first sensor when the cap is in the first position. In such embodiments, the sensors are spaced at an angle θ, the magnets are positioned with respect to the first magnet at angles of a half (2n+1) θ, where n represents consecutive integers 1, 2, 3, etc., and said magnets alternate in polarity for successive values of n. In such embodiments, the circuitry is arranged to detect the first position when the magnetic field strength detected by the first sensor is a maximum, and the sum of the magnetic field strength for the other sensors equal zero.
Particular embodiments further include a second replaceable reservoir positionable within the reservoir receptacle in place of the first replaceable reservoir, wherein the magnetic fields of the magnets of the first and second replaceable reservoirs have different orientations, the sensor is arranged to be able to detect the different orientation when the second replaceable reservoir is in the first position, and the circuitry is configured to indicate that the second replaceable reservoir is in the infusion pump rather than the first replaceable reservoir.
In particular embodiments, the different orientation is a reversal of the polarity of the magnetic field. In particular embodiments, the different orientation is a change in the plane of magnetization of the magnetic field.
In particular embodiments, the sensor includes a Hall effect device. In particular embodiments, the sensor includes an AMR angle sensor.
An infusion pump system according to an embodiment of the present invention includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, where infusion pump device includes at least one inductive sensor element. The infusion pump system embodiment further includes a connector interface system for connecting the reservoir with the infusion pump device. In particular embodiments, a connector interface system includes a cap to connect to the reservoir to form a reservoir/cap unit for installation into an infusion pump device, and where at least one inductively detectable feature is provided on the cap or the reservoir for detection by the at least one inductive sensor element on the infusion pump when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. The at least one inductively detectable feature includes at least one electrically conductive material. In further embodiments, the connector interface system includes the reservoir to be received within the reservoir receptacle of the infusion pump device, where the reservoir contains or is to contain infusion media to be selectively dispensed from the reservoir when the reservoir is received within the reservoir receptacle. In further embodiments, the connector interface system includes an infusion set coupled to the cap via a tubing for conveying infusion media dispensed from the reservoir.
In further embodiments, the at least one inductively detectable feature has at least one detectable parameter including one or more of: the existence of one or more inductively detectable features, proximity of the at least one inductively detectable feature relative to the at least one sensor element, a size of the at least one inductively detectable feature, a shape of the at least one inductively detectable feature, a material of the at least one inductively detectable feature, a pattern of locations of one or more inductively detectable features, or the number of inductively detectable features.
In further embodiments, the at least one inductively detectable feature includes a plurality of inductively detectable features arranged at different respective locations on the cap.
In particular embodiments, the at least one inductively detectable feature includes a plurality of inductively detectable features in locations that allow the inductively detectable features to inductively interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
In further embodiments, the cap includes a housing having an opening for receiving a portion of the reservoir, the opening defining a central axis, and wherein the at least one inductively detectable feature includes at least one electrically conductive body having a ring shape or partial ring shape arranged around the central axis.
In further embodiments, the at least one inductively detectable feature includes at least one electrically conductive body having a first end and a second end, the first end of the electrically conductive body having a smaller dimension than the second end of the electrically conductive body.
In further embodiments, the at least one electrically conductive body is arranged on or in the cap in a position such that a predefined one of the first and second ends of the electrically conductive body moves in a predefined direction relative to the at least one sensor, followed by the other of the first and second ends of the electrically conductive body, as the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments, the at least one electrically conductive body has a triangular shape or an arrow-head shape.
In further embodiments, the at least one sensor element includes at least one electrically conductive coil provided on or in the infusion pump device, at a location at which the at least one electrically conductive body induces a detectable change in a current flow in the at least one electrically conductive coil, as the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments, the at least one sensor element includes at least one electrically conductive coil provided around an axis of the reservoir receptacle of the infusion pump device.
In further embodiments, the at least one sensor element includes at least one electrically conductive coil provided in a ring-shaped member coupled to one end of the reservoir receptacle of the infusion pump device.
In further embodiments, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one inductively detectable feature is detected by the at least one sensor element.
A connector interface for connecting a reservoir containing an infusion media with an infusion pump device according to a further embodiment includes a cap configured to connect to the reservoir to form a reservoir/cap unit, and at least one inductively detectable feature arranged on the cap or the reservoir for detection by at least one inductive sensor element on the infusion pump device when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments of such connector interface, the at least one inductively detectable feature has at least one detectable parameter that is associated in a table or other data arrangement with one or more characteristics of the cap, reservoir or infusion pump device.
In further embodiments of such connector interface, the at least one detectable parameter includes one or more of: a proximity or distance between the one or more electrically conductive targets and the one or more coils, or the size, shape, material location or pattern of locations of the one or more electrically conductive targets.
In further embodiments of such connector interface, the at least one detectable parameter of the inductively detectable feature provides a detectable signature that indicates the presence of a reservoir/cap unit in a fully installed position within reservoir receptacle, or information associated with the cap, the reservoir or the reservoir/cap unit.
In further embodiments of such connector interface, the detectable parameter of the of at least one inductively detectable feature is associated with one or more characteristics that include one or more of: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users.
In further embodiments of such connector interface, the at least one inductively detectable feature includes: (a) one or more electrically conductive targets in one or more locations for inductive interaction with the one or more coils when the reservoir/cap unit is received in the reservoir receptacle; or (b) a plurality of electrically conductive targets in locations that allow the one or more electrically conductive targets to inductively interact with the one or more coils to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
In further embodiments of such connector interface, the at least one inductively detectable feature includes: (a) one or more electrically conductive targets on the cap or the reservoir; (b) one or more electrically conductive targets supported by one or more moveable support structures on the infusion pump device for engagement with an engagement portion on the cap or the reservoir and for linear movement with the cap or the reservoir upon the cap or the reservoir being received in the reservoir receptacle of the infusion pump device, where the engagement portion is provided at a predefined location on the cap or the reservoir to provide a predefined amount of movement of an electrically conductive target relative to a predefined coil, where the engagement portion includes one or more protrusions, bumps, extensions, ramps or depressions; (c) one or more electrically conductive targets supported on one or more moveable members supported in one or more channels in the infusion pump device, where each moveable member has one end arranged in a location to be contacted by an engagement portion of the cap or the reservoir upon the cap or the reservoir being received in the reservoir receptacle, to move the moveable member and electrically conductive target supported thereon from a first position to a second position in a direction of a longitudinal dimension of the channel as the cap or the reservoir is received in the reservoir receptacle, where each moveable member is biased by a bias spring toward the first position, and where each moveable member includes one or more seals for sealing with an inner surface of a channel; or (d) a structure mounted on a piston inside the reservoir.
In further embodiments of such connector interface, the one or more or plurality of electrically conductive targets include: (a) at least one metallic ring or band on the cap or the reservoir that extends circumferentially around an axis of the cap or the reservoir; (b) at least one electrically conductive target having a predefined shape, size or conductive characteristic that provides a predetermined induction signature; (c) at least one electrically conductive target having a triangular shape, tapered shape or arrow-head shape with one end that is wider than an opposite end to provide a time varying induction signature when the at least one electrically conductive target is moved relative to the at least one inductive sensor; (d) a plurality of electrically conductive targets having the same shape relative to each other; (e) a plurality of electrically conductive targets having different shapes relative to each other; or (f) a plurality of electrically conductive targets arranged in a pattern to provide a predetermined induction signature.
In further embodiments of such connector interface, the one or more or plurality of electrically conductive targets are: (a) attached to an outer surface of the cap or the reservoir, (b) attached to an inner surface of the cap or the reservoir, or (c) embedded within a wall of the cap or the reservoir.
An infusion pump system according to further embodiments includes a connector interface as described in any of the preceding paragraphs and an infusion pump device having a reservoir receptacle for receiving the reservoir, and for selectively dispensing the infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes at least one inductive sensor element for detecting the inductively detectable feature.
In further embodiments of such infusion pump system, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one inductively detectable feature is detected by the at least one inductive sensor element.
In further embodiments of such infusion pump system, the electronics are connected with a memory that stores the table or other data arrangement, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table or other data arrangement with the at least one detectable parameter of the inductively detectable feature.
In further embodiments of such infusion pump system, the electronics are configured to record information in the memory, the information corresponding to: (a) at least one detectable parameter detected by the at least one inductive sensor, or (b) at least one characteristic associated in the table or other data arrangement with at least one detectable parameter detected by the at least one inductive sensor.
In further embodiments of such infusion pump system, the electronics are further configured to record location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter of the inductively detectable feature is detected.
In further embodiments of such infusion pump system, the electronics are further configured to record time information corresponding to a time or date when the at least one detectable parameter is detected.
In further embodiments of such infusion pump system, the at least one inductive sensor includes one or more electrically conductive coils on the infusion pump device, the one or more electrically conductive coils being electrically connected with an electrical circuit that is coupled to processing electronics configured to detect electrical induction effects in the electrical circuit caused by movement or proximity of the at least one inductively detectable feature relative to the one or more electrically conductive coils.
In further embodiments of such infusion pump system, (a) the at least one inductively detectable feature is arranged on the cap, the reservoir or the infusion pump device, at a location to be detected by the at least one inductive sensor element when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, but not detected by the at least one inductive sensor element when the reservoir/cap unit is not fully received in the reservoir receptacle of the infusion pump device; or (b) the cap includes at least one thread arranged to engage a corresponding thread or groove in the infusion pump device when the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device, wherein the at least one inductively detectable feature is located on the at least one thread.
An infusion pump system according to a further embodiment includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes at least one inductive sensor. The infusion pump system further includes a connector interface for connecting the reservoir with the infusion pump device, wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit, said reservoir/cap unit having an identifying pattern of engagement members. The infusion pump system further includes inductively detectable target members inside the reservoir receptacle and disposed to be engaged by respective one of the engagement members to move the target members into detectable proximity to the inductive sensor, thereby detecting the identifying pattern of engagement members when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments of the above-described infusion pump system, the identifying pattern of engagement members represents one or more of the following characteristics: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users; and the infusion pump system contains electronics including a memory that stores a table associating said characteristics with identifying patterns of engagement members, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table with the detected identifying pattern.
An infusion pump device according to a further embodiment includes a reservoir receptacle for receiving the reservoir, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle. The infusion pump device further includes at least one inductive sensor element for detecting the inductively detectable feature on the reservoir, representing its contents or characteristics of any tubing or infusion set connected thereto. The infusion pump device further includes electronics connected to the at least one sensor element and configured to control said selective dispensing at least partially in accordance with said detected feature.
Further embodiments include a method of configuring an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, there being provided a connector interface for connecting the reservoir with the infusion pump device, wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit. The method includes providing the reservoir/cap unit with an inductively detectable feature containing data required to configure the pump for that particular reservoir/cap unit when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device; detecting the inductively detectable feature using an inductive sensor on the pump; and configuring the pump in accordance with the detected data.
An infusion pump system according to an embodiment of the present invention includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, where infusion pump device includes at least one Radio Frequency (RF) sensor (e.g., a transmitter/receiver) element. The infusion pump system embodiment further includes a connector interface system for connecting the reservoir with the infusion pump device. A connector interface system according to an embodiment of the present invention has a cap configured to connect to the reservoir to form a reservoir/cap unit for installation into an infusion pump device, and where at least one RF detectable feature is provided on the cap or the reservoir for detection by the at least one RF sensor element on the infusion pump device when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. In further embodiments, the connector interface system includes the reservoir to be received within the reservoir receptacle of the infusion pump device, where the reservoir contains or is to contain infusion media to be selectively dispensed from the reservoir when the reservoir is received within the reservoir receptacle. In further embodiments, the connector interface system includes an infusion set coupled to the cap via a tubing for conveying infusion media dispensed from the reservoir.
In particular embodiments, the at least one RF detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
In particular embodiments, the at least one detectable parameter includes one or more of: the existence of one or more RF detectable features on the cap or the reservoir; the location or pattern of locations of one or more RF detectable features on the cap or the reservoir; the type of RF detectable feature on the cap or the reservoir; the type or content of data stored by the RF detectable feature; the polarity, direction or orientation, RSSI or other RF signal strength, or amplitude or phase of an RF signal from the RF detectable feature.
In particular embodiments, the detectable parameter of the of at least one RF detectable feature is associated with one or more characteristics that include one or more of: a type or identity of a manufacturer of the reservoir or the cap; a size of the reservoir or the cap; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date, or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir or the cap; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap was made, assembled, or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, or the cap is authorized to be used; a lot number or code associated with a batch in which the reservoir, the cap, or infusion media was made, cleaned, filled, or otherwise processed; a serial number; a unique ID; user identification information for authorized users; a type, length, or size of the cannula; or a type, length, or size of the tubing connected between the cap and the cannula.
In further embodiments, the at least one RF detectable feature includes a plurality of RF detectable features arranged at different respective locations on the cap.
In further embodiments, the at least one RF detectable feature includes a plurality of RF detectable features in locations that allow the RF detectable features to interact with the at least one RF sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
In further embodiments, the at least one RF detectable feature includes a radio frequency identification (RFID) tag that is attached to the cap.
In further embodiments, the at least one RF detectable feature includes a passive RF device that receives power through inductive coupling with the at least one RF sensor element.
In further embodiments, the at least one RF detectable feature includes an RF detectable device having a directional antenna or an antenna with at least one RF shield or wave guide configured to direct RF signals to or from the antenna.
In further embodiments, the at least one RF detectable feature has a memory that stores information, and an antenna for communicating information stored in the memory, the memory includes a first section that stores permanent information and a second section that is writeable for storing information written to the RF detectable feature.
In further embodiments, the information stored in the memory includes information identifying one or more of: a type or identity of a manufacturer of the reservoir; a size of the reservoir; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a volume amount of infusion media that has been dispensed from the reservoir; a date corresponding to an expiration date or fill date related to infusion media in the reservoir; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a lot number or code associated with a batch in which the reservoir or infusion media was made, cleaned, filled or otherwise processed.
In further embodiments, the information stored in the memory includes information identifying one or more characteristics relating to an infusion set connected to the cap, the one or more characteristics including at least one of: a type or identity of a manufacturer of the infusion set; a length of tubing in the infusion set; a diameter of the tubing in the infusion set; a length of a needle or cannula in the infusion set; a diameter of the needle or cannula in the infusion set; a date corresponding to an expiration date, manufacturing date or assembly date of the infusion set; a location corresponding to a place where the infusion set was made or assembled; a lot number or other code associated with a batch in which the infusion set was made, cleaned or otherwise processed.
In further embodiments, the information stored in the memory includes information identifying one or more characteristics of the connector interface, the one or more characteristics including at least one of a type or manufacturer of the connection interface; a size dimension of the cap; a date corresponding to an expiration date, manufacturing date or assembly date of the connector interface; a location corresponding to the place where the connector interface was made or assembled; a lot number or other code associated with a batch in which the connector interface was made, cleaned or otherwise processed.
In further embodiments, the infusion set further includes a cannula, and wherein the at least one RF detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cannula or the tubing of the infusion set.
In further embodiments, the characteristic of the cannula or the tubing of the infusion set includes a size or length of the cannula, or a size or length of the tubing.
In further embodiments, the infusion pump device includes electronics connected with an electronic memory, the electronics and electronic memory are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated with the at least one detectable parameter in a table or other data arrangement stored in the electronic memory.
In further embodiments, the infusion pump device includes electronics configured to record information in a memory, the information corresponding to one or more of: (a) at least one detectable parameter detected by the at least one RF sensor, (b) at least one characteristic associated with at least one detectable parameter detected by the at least one RF sensor, (c) location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter is detected, or (d) time information corresponding to a time or date when the at least one detectable parameter is detected.
In further embodiments, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one RF detectable feature is detected by the RF sensor element.
A connector interface for connecting a reservoir containing an infusion media with an infusion pump device according to a further embodiment includes a cap configured to connect to the reservoir to form a reservoir/cap unit. At least one RF detectable feature is arranged on the cap or the reservoir for detection by at least one RF sensor element when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments: (a) the at least one RF detectable feature includes a radio frequency identification (RFID) tag that is attached to a housing of the cap to the reservoir or on a plunger within the reservoir, (b) the at least one RF detectable feature includes a passive RF device that receives power through inductive coupling with the RF sensor, (c) the at least one RF detectable feature includes an RF detectable device having a directional antenna or an antenna with at least one RF shield or wave guide configured to direct RF signals to or from the antenna, (d) the at least one RF detectable feature includes an RF detectable device having an antenna, the antenna being arranged adjacent or in a vent opening on the cap, and (e) the at least one RF detectable feature includes an antenna printed with conductive ink on the cap, the reservoir, or a label applied to the reservoir or cap; or (f) the at least one RF detectable feature has a memory that stores information, and an antenna for communicating information stored in the memory, the memory includes a first section that stores permanent information and a second section that is writeable for storing information written to the RF detectable feature, where: (i) the information stored in the memory includes information identifying one or more of: a type or identity of a manufacturer of the reservoir; a size of the reservoir; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a volume amount of infusion media that has been dispensed from the reservoir; a date corresponding to an expiration date or fill date related to infusion media in the reservoir; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a lot number or code associated with a batch in which the reservoir or infusion media was made, cleaned, filled or otherwise processed; (ii) the information stored in the memory includes information identifying one or more characteristics relating to an infusion set connected to the cap, the one or more characteristics including at least one of: a type or identity of a manufacturer of the infusion set; a length of tubing in the infusion set; a diameter of the tubing in the infusion set; a length of a needle or cannula in the infusion set; a diameter of the needle or cannula in the infusion set; a date corresponding to an expiration date, manufacturing date or assembly date of the infusion set; a location corresponding to a place where the infusion set was made or assembled; a lot number or other code associated with a batch in which the infusion set was made, cleaned or otherwise processed; or (iii) the information stored in the memory includes information identifying one or more characteristics of the connector interface, the one or more characteristics including at least one of a type or manufacturer of the connection interface; a size dimension of the cap; a date corresponding to an expiration date, manufacturing date or assembly date of the connector interface; a location corresponding to the place where the connector interface was made or assembled; a lot number or other code associated with a batch in which the connector interface was made, cleaned or otherwise processed.
In further embodiments, the at least one RF detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, reservoir, downstream structure, or infusion pump device.
In further embodiments, the at least one RF detectable feature has at least one detectable parameter including one or more of: the existence of one or more RF detectable feature(s) on the cap or the reservoir; the location or pattern of locations of one or more RF detectable features on the cap or the reservoir; the type of RF detectable feature on the cap or the reservoir; the type or content of data stored by the RF detectable feature; the polarity, direction or orientation, RSSI or other RF signal strength, amplitude or phase of an RF signal from the RF detectable feature.
In further embodiments, the at least one RF detectable feature has at least one detectable parameter that is associated with one or more characteristics that include one or more of: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users.
In further embodiments, an infusion pump system includes a connector interface as described in any of the preceding paragraphs and an infusion pump device having a reservoir receptacle for receiving the reservoir, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes at least one Radio Frequency (RF) sensor (e.g., a transmitter/receiver) element to detect the reservoir in the reservoir receptacle.
In further embodiments, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics being configured to inhibit dispensing of infusion media from the reservoir unless the at least one RF detectable feature is detected by the RF sensor element.
In further embodiments, electronics are provided connected with a memory that stores a table or other data arrangement, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table or other data arrangement with the at least one detectable parameter of the RF detectable feature.
In further embodiments, the electronics are configured to record information in the memory, the information corresponding to: (a) at least one detectable parameter detected by the at least one RF sensor, or (b) at least one characteristic associated in the table or other data arrangement with at least one detectable parameter detected by the at least one RF sensor.
In further embodiments, the electronics are further configured to record location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter of the RF detectable feature is detected.
In further embodiments, the at least one RF detectable feature includes: (a) one or more RF detectable features in one or more locations for RF interaction with the at least one RF sensor when the reservoir/cap unit is received in the reservoir receptacle; or (b) a plurality of RF detectable features in locations that allow the one or more of the RF detectable features to interact with the at least one RF sensor to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
An infusion pump system according to a further embodiment includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle. The infusion pump system further includes a connector interface for connecting the reservoir with the infusion pump device wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit, said reservoir/cap unit containing an RFID chip. The RFID chip contains data representing one or more of the following characteristics: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users. The infusion pump system further includes a structure on the infusion pump device for detecting reception of the reservoir in the reservoir receptacle. The infusion pump system contains electronics connected to the reception detecting structure and having circuitry to interrogate the RFID chip to read characteristics therefrom to control the selective dispensing of infusion media from the reservoir (1) when the reservoir is detected as received within the reservoir receptacle, the selective dispensing being based, at least in part on the characteristics read from the RFID chip.
In further embodiments, an infusion pump device has a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle; an RFID chip reader configured to read data from an RFID chip on the reservoir, the data representing the contents of the reservoir or characteristics of any tubing or infusion set connected thereto; and electronics connected to the RFID reader and configured to control said selective dispensing at least partially in accordance with said read data.
Further embodiments include a method of configuring an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, there being provided a connector interface for connecting the reservoir with the infusion pump device, wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit. In such embodiments, the method includes providing the reservoir/cap unit with an RFID chip containing data required to configure the pump for that particular reservoir/cap unit when the reservoir (1) of the reservoir/cap unit is received in the reservoir receptacle (32) of the infusion pump device (30); interrogating the RFID chip to obtain the data; and configuring the pump in accordance with the detected data.
An infusion pump system according to an embodiment of the present invention includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, where infusion pump device includes at least one mechanical detection sensor element. The infusion pump system embodiment further includes a connector interface system for connecting the reservoir with the infusion pump device. A connector interface system according to an embodiment has a cap configured to connect to the reservoir to form a reservoir/cap unit, and where at least one mechanically detectable feature is arranged on the cap or the reservoir for detection by the at least one sensor element when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. In further embodiments, the connector interface system includes the reservoir to be received within the reservoir receptacle of the infusion pump device, where the reservoir contains or is to contain infusion media to be selectively dispensed from the reservoir when the reservoir is received within the reservoir receptacle. In further embodiments, the connector interface system includes an infusion set coupled to the cap via a tubing for conveying infusion media dispensed from the reservoir.
In further embodiments, the at least one mechanically detectable feature includes a plurality of mechanically detectable features arranged at different respective locations on the cap.
In further embodiments, the at least one mechanically detectable feature includes a plurality of mechanically detectable features in locations that allow the mechanically detectable features to mechanically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
In further embodiments, the at least one mechanically detectable feature is arranged on the cap or on the reservoir, at a location to be detected by the at least one sensor element when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, but not detected by the at least one sensor element when the reservoir/cap unit is not fully received in the reservoir receptacle of the infusion pump device.
In further embodiments, the at least one mechanically detectable feature includes at least one protrusion on an outer surface of the cap or the reservoir.
In further embodiments, the at least one mechanically detectable feature includes a plurality of protrusions at mutually different locations on the cap or the reservoir.
In further embodiments, the at least one mechanically detectable feature includes first and second protrusions located about 180 degrees from each other with respect to a central axis through the reservoir/cap unit.
In further embodiments, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one mechanically detectable feature is detected by the at least one sensor element.
In further embodiments, the at least one sensor element includes at least one moveable actuator arranged on the infusion pump device, and wherein the at least one mechanically detectable feature is provided on at least one predefined location of the cap or the reservoir, for engagement with at least one moveable actuator on the infusion pump device when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device.
In further embodiments, the infusion pump device has a housing portion in which a channel is located. The channel has a longitudinal dimension and is open to the reservoir receptacle on one end of its longitudinal dimension. In such embodiments, the at least one moveable actuator includes a moveable member arranged within the channel. The moveable member has a first end arranged within the housing portion of the infusion pump device, and a second end arranged to extend through the open end of the channel and into the reservoir receptacle for engaging the cap or the reservoir when the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In particular embodiments, the moveable member is made of a compressible material that compresses in at least one dimension and expands in at least one other dimension when the second end of the moveable member is engaged by the cap or the reservoir as the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments, the at least one sensor element includes an electrical switch located in the infusion pump device housing, wherein the first end of the moveable member is arranged adjacent the electrical switch, and wherein the moveable member is arranged to activate the electrical switch when the moveable member expands in said other dimension
In further embodiments, the moveable member includes at least one seal for sealing the channel to inhibit the passage of fluid through the channel, where the at least one seal includes at least one seal structure on the moveable member and that engages an inner surface of the channel.
A connector interface for connecting a reservoir containing an infusion media with an infusion pump device according to a further embodiment includes a cap configured to connect to the reservoir to form a reservoir/cap unit, and wherein at least one mechanically detectable feature is arranged on the cap or the reservoir for detection by at least one sensor element on the pump device when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments, the at least one mechanically detectable feature includes at least one protrusion on an outer surface of the cap or the reservoir, a plurality of protrusions at mutually different locations on the cap or the reservoir, or first and second protrusions located about 180 degrees from each other with respect to a central axis through the cap or the reservoir.
In further embodiments, (a) the at least one mechanically detectable feature includes a plurality of mechanically detectable features arranged at different respective locations on the cap or the reservoir; (b) the at least one mechanically detectable feature is arranged on the cap or on the reservoir, at a location to be detected by the at least one sensor element when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, but not detected by the at least one sensor element when the reservoir/cap unit is not fully received in the reservoir receptacle of the infusion pump device; (c) the at least one mechanically detectable feature includes a plurality of mechanically detectable features in locations that allow the mechanically detectable features to mechanically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle; or (d) the cap includes at least one thread arranged to engage a corresponding thread or groove in the infusion pump device when the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device, wherein the at least one mechanically detectable feature is located on the at least one thread.
In further embodiments, the at least one mechanically detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, reservoir or infusion pump device.
In further embodiments, the at least one detectable parameter includes one or more of: the existence of one or more mechanically detectable feature on the cap or the reservoir; the location or pattern of locations of one or more mechanically detectable features on the cap or the reservoir; or the size or shape of the mechanically detectable feature on the cap or the reservoir.
In further embodiments, the detectable parameter of the of at least one mechanically detectable feature is associated with one or more characteristics that include one or more of: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users.
An infusion pump system according to a further embodiment includes a connector interface as described in any of the above embodiments, and an infusion pump device having a reservoir receptacle for receiving the reservoir, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes at least one mechanical detection sensor element to detect the mechanically detectable feature.
In further embodiments of such an infusion pump system, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one mechanically detectable feature is detected by the at least one sensor element.
In further embodiments of such an infusion pump system, the electronics are connected with a memory that stores a table or other data arrangement, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table or other data arrangement with the at least one detectable parameter of the mechanically detectable feature.
In further embodiments of such an infusion pump system, the electronics are configured to record information in the memory, where the information corresponds to: (a) at least one detectable parameter of the mechanically detectable feature detected by the at least one sensor, or (b) at least one characteristic associated in the table or other data arrangement with at least one detectable parameter of the mechanically detectable feature detected by the at least one sensor.
In further embodiments of such an infusion pump system, the electronics are further configured to record location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter of the mechanically detectable feature is detected.
In further embodiments of such an infusion pump system, the electronics are further configured to record time information corresponding to a time or date when the at least one detectable parameter of the mechanically detectable feature is detected.
In further embodiments of such an infusion pump system, the at least one sensor element includes at least one moveable actuator arranged on the infusion pump device.
In further embodiments of such an infusion pump system, the detectable feature includes at least one mechanically detectable feature provided on at least one predefined location of the cap or the reservoir, for engagement with at least one moveable actuator on the infusion pump device when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device.
In further embodiments of such an infusion pump system, the infusion pump device has a housing portion in which a channel is located, the channel having a longitudinal dimension, the channel being open to the reservoir receptacle on one end of its longitudinal dimension.
In further embodiments of such an infusion pump system, the at least one moveable actuator includes a moveable member arranged within the channel, the moveable member having a first end arranged within the housing portion of the infusion pump device, the moveable member having a second end arranged to extend through the open end of the channel and into the reservoir receptacle for engaging the cap or the reservoir when the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments of such an infusion pump system, the moveable member is made of a compressible material that compresses in at least one dimension and expands in at least one other dimension when the second end of the moveable member is engaged by the cap or the reservoir as the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In further embodiments of such an infusion pump system, the at least one sensor element further includes an electrical switch located in the infusion pump device housing, wherein the first end of the moveable member is arranged adjacent the electrical switch, and wherein the moveable member is arranged to activate the electrical switch when the moveable member expands in said other dimension.
In further embodiments of such an infusion pump system, the moveable member includes at least one seal for sealing the channel to inhibit the passage of fluid through the channel, the at least one seal including at least one seal structure on the moveable member and that engages an inner surface of the channel.
An infusion pump system according to a further embodiment includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle; and a connector interface for connecting the reservoir with the infusion pump device wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit, said reservoir/cap unit having an identifying pattern of engagement members. The infusion pump device has movable members movable between a first position in which the movable members project into the reservoir receptacle and a second retracted position, each movable member further having an associated electrical switch which is actuated when the movable member is in the retracted position. Each of the engagement members of the pattern of engagement members on the reservoir/cap unit is positioned to engage a respective one of the movable members and move it from the first position to the second position when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device thereby detecting the identifying pattern of engagement members.
In further embodiments of such an infusion pump system, the identifying pattern of engagement members represents one or more of the following characteristics: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users. In addition, the infusion pump system contains electronics connected to the electrical switches including a memory that stores a table associating said characteristics with identifying patterns of engagement members. The electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table with the detected identifying pattern.
An infusion pump device according to a further embodiment has a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle. The infusion pump device according to such embodiments further includes at least one mechanical detection sensor element to detect a mechanically detectable feature on the reservoir, representing its contents or characteristics of any tubing or infusion set connected thereto. The infusion pump device further includes electronics connected to the at least one sensor element and configured to control said selective dispensing at least partially in accordance with said detected feature.
Further embodiments include a method of configuring an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, there being provided a connector interface for connecting the reservoir with the infusion pump device, wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit. The method according to such embodiments includes providing the reservoir/cap unit with an identifying pattern of engagement members containing data required to configure the pump for that particular reservoir/cap unit when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. The method further includes detecting the pattern of engagement member using feelers extending into the reservoir receptacle, each operating an electrical switch on detection of respective engagement member to produce electric signals corresponding to the data; and configuring the pump in accordance with the detected data.
An infusion pump system according to an embodiment of the present invention includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, where infusion pump device includes at least one optical sensor element. The infusion pump system embodiment further includes a connector interface system for connecting the reservoir with the infusion pump device. In particular embodiments, the connector interface system has a cap configured to connect to the reservoir to form a reservoir/cap unit, and where at least one optically detectable feature is arranged on the cap or the reservoir for detection by the at least one optical sensor element when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. In further embodiments, the connector interface system includes the reservoir to be received within the reservoir receptacle of the infusion pump device, where the reservoir contains or is to contain infusion media to be selectively dispensed from the reservoir when the reservoir is received within the reservoir receptacle. In further embodiments, the connector interface system includes an infusion set coupled to the cap via a tubing for conveying infusion media dispensed from the reservoir.
In further embodiments, the at least one optically detectable feature has at least one detectable parameter that is associated in a table or other data arrangement with one or more characteristics of the cap, reservoir or infusion pump device.
In particular embodiments, the at least one detectable parameter includes one or more of: the existence of one or more optically detectable features on the cap; the location or pattern of locations of one or more optically detectable features on the cap; the type of optically detectable feature on the cap; the type or content of data stored by the optically detectable feature; or the polarity, wavelength, phase, intensity, direction or orientation of an optical signal emitted or reflected by the optically detectable feature.
In particular embodiments, the detectable parameter of the of at least one optically detectable feature is associated with one or more characteristics that include one or more of: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users.
In further embodiments, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one optically detectable feature is detected by the at least one optical sensor element.
In further embodiments, the electronics are connected with a memory that stores the table or other data arrangement, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table or other data arrangement with the at least one detectable parameter of the optically detectable feature.
In further embodiments, the electronics are configured to record information in the memory, the information corresponding to: (a) at least one detectable parameter detected by the at least one optical sensor, or (b) at least one characteristic associated in the table or other data arrangement with at least one detectable parameter detected by the at least one optical sensor.
In further embodiments, the electronics are further configured to record location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter of the optically detectable feature is detected.
In further embodiments, the electronics are further configured to record time information corresponding to a time or date when the at least one detectable parameter of the optically detectable feature is detected.
In further embodiments, the at least one optically detectable feature is configured to alter an optical signal in an optically detectable manner by altering one or more of the wavelength, direction, phase or other characteristic of the optical signal.
In further embodiments, the at least one optically detectable feature includes: (a) at least one surface of the cap or the reservoir that has at least one of a material, coating, surface contour or pattern, ribs, grooves, undulations, roughness, abrasions, apertures, detents or an attached article, that inhibits or changes optical reflective characteristics of the at least one surface of the cap; (b) a bar code, matrix code or other optically detectable pattern that represents encoded information; or (c) an adhesive-backed tag that adheres to the cap and that has an outer surface configured to alter an optical signal in an optically detectable manner.
In further embodiments, the at least one optical sensor includes an optical emitter device configured to emit an optical signal, and an optical detector device configured to detect an optical signal emitted from the optical emitter device and reflected from optically detectable feature when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device.
In further embodiments, the infusion pump device has a housing portion in which at least one channel is located, each channel having a longitudinal dimension and arranged in optical alignment with the reservoir receptacle on one end of its longitudinal dimension.
In further embodiments, the optical emitter device and the optical detector device of the optical sensor are arranged in optical alignment with the at least one channel.
In further embodiments, at least one seal seals the at least one channel to inhibit the passage of fluid through the at least one channel.
In further embodiments, the at least one seal includes (a) an optically transparent or partially transparent material that at least partially fills the at least one channel along at least part of the longitudinal dimension of the at least one channel, or (b) an optically transparent or partially transparent window material at one end of the at least one channel.
In further embodiments, (a) the at least one optically detectable feature includes at least one optically detectable feature provided on at least one predefined location of the cap or the reservoir, for optical alignment with the optical sensor on the infusion pump device when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device; (b) the at least one optically detectable feature includes a plurality of optically detectable features arranged at different respective locations on the cap or on the reservoir; (c) the at least one optically detectable feature is arranged on the cap or on the reservoir, at a location to be detected by the at least one optical sensor element when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, but not detected by the at least one optical sensor element when the reservoir/cap unit is not fully received in the reservoir receptacle of the infusion pump device; (d) the at least one optically detectable feature includes a plurality of optically detectable features in locations that allow the optically detectable features to optically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle; or (e) the cap includes at least one thread arranged to engage a corresponding thread or groove in the infusion pump device when the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device, wherein the at least one optically detectable feature is located on the at least one thread.
A connector interface for connecting a reservoir with an infusion pump device according to an embodiment of the present invention includes a cap configured to connect to the reservoir to form a reservoir/cap unit, and wherein at least one optically detectable feature is arranged on the cap or the reservoir for detection by at least one optical sensor element in the infusion pump device when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In particular embodiments of such a connector interface, the at least one detectable parameter includes one or more of: the existence of one or more optically detectable features on the cap; the location or pattern of locations of one or more optically detectable features on the cap; the type of optically detectable feature on the cap; the type or content of data stored by the optically detectable feature; or the polarity, wavelength, phase, intensity, direction or orientation of an optical signal emitted or reflected by the optically detectable feature.
In particular embodiments of such a connector interface, the at least one optically detectable feature includes: (a) at least one surface of the cap or the reservoir that has at least one of a material, coating, surface contour or pattern, ribs, grooves, undulations, roughness, abrasions, apertures, detents or an attached article, that inhibits or changes optical reflective characteristics of the at least one surface of the cap; (b) a bar code, matrix code or other optically detectable pattern that represents encoded information; or (c) an adhesive-backed tag that adheres to the cap and that has an outer surface configured to alter an optical signal in an optically detectable manner.
In particular embodiments of such a connector interface, the at least one optically detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, reservoir or infusion pump device.
In particular embodiments of such a connector interface, the at least one optically detectable feature has at least one detectable parameter associated with one or more characteristics that include one or more of: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users.
An infusion pump system according to an embodiment of the present invention includes a connector interface according to any of the above-described embodiments; an infusion pump device having a reservoir receptacle for receiving the reservoir containing infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes at least one optical sensor element.
In particular embodiments, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics being configured to inhibit dispensing of infusion media from the reservoir unless the at least one optically detectable feature is detected by the at least one optical sensor element.
In particular embodiments of the infusion pump system, electronics are connected with a memory that stores a table or other data arrangement, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on one or more characteristics associated in the table or other data arrangement with the at least one detectable parameter of the optically detectable feature.
In particular embodiments of the infusion pump system, electronics are configured to record information in the memory, the information corresponding to: (a) at least one detectable parameter detected by the at least one optical sensor, or (b) at least one characteristic associated in the table or other data arrangement with at least one detectable parameter detected by the at least one optical sensor.
In particular embodiments of the infusion pump system, the electronics are further configured to record location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter of the optically detectable feature is detected.
In particular embodiments of the infusion pump system, the electronics are further configured to record time information corresponding to a time or date when the at least one detectable parameter of the optically detectable feature is detected.
In particular embodiments of the infusion pump system, the at least one optically detectable feature is configured to alter an optical signal incident on the detectable features in an optically detectable manner by altering one or more of the wavelength, direction, phase or other characteristic of the optical signal.
In particular embodiments of the infusion pump system, the at least one optical sensor includes an optical emitter device configured to emit an optical signal, and an optical detector device configured to detect an optical signal emitted from the optical emitter device and reflected from optically detectable feature when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device.
In particular embodiments of the infusion pump system, the infusion pump device has a housing portion mounting the optical emitter device and the optical detection device, said housing defining respective channels for the optical emitter device and the optical detector device.
In particular embodiments of the infusion pump system, at least one seal seals the channels to inhibit the passage of fluid therethrough.
In particular embodiments of the infusion pump system, the at least one seal includes: (a) an optically transparent or partially transparent material in each channel, or (b) an optically transparent or partially transparent window material at one end of the channels, or (c) both (a) and (b).
In particular embodiments of the infusion pump system: (a) the at least one optically detectable feature includes at least one optically detectable feature provided on at least one predefined location of the cap or the reservoir, for optical alignment with the optical sensor on the infusion pump device when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device; (b) the at least one optically detectable feature includes a plurality of optically detectable features arranged at different respective locations on the cap or on the reservoir; (c) the at least one optically detectable feature is arranged on the cap or on the reservoir, at a location to be detected by the at least one optical sensor element when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, but not detected by the at least one optical sensor element when the reservoir/cap unit is not fully received in the reservoir receptacle of the infusion pump device; (d) the at least one optically detectable feature includes a plurality of optically detectable features in locations that allow the optically detectable features to optically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle; or (e) the cap includes at least one thread arranged to engage a corresponding thread or groove in the infusion pump device when the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device, wherein the at least one optically detectable feature is located on the at least one thread.
An infusion pump system according to an embodiment of the present invention includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes an optical emitter device and an optical detection device. The infusion pump system further includes a connector interface for connecting the reservoir with the infusion pump device wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit, said reservoir/cap unit being movable from a first position in which the reservoir is not received in the reservoir receptacle to a second position in which it is received within the reservoir receptacle, the reservoir/cap unit further having an identifying pattern of areas of different reflectivity or refractivity, disposed on the reservoir/cap unit such that when the reservoir/cap unit is moved from the first position to the second position said areas identifying pattern passes between the optical emitter device and the optical detection device, thereby detecting the identifying pattern as the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device.
In particular embodiments of the infusion pump system, the identifying pattern of engagement members represents one or more of the following characteristics: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users; and the infusion pump system contains electronics including a memory that stores a table associating said characteristics with identifying patterns of engagement members, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table with the detected identifying pattern.
An infusion pump device according to an embodiment of the present invention has a reservoir receptacle for receiving the reservoir containing infusion media, the pump device being for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes: at least one optical sensor element, for detecting an optically detectable feature on the reservoir, representing its contents or characteristics of any tubing or infusion set connected thereto; and electronics connected to the at least one sensor element and configured to control said selective dispensing at least partially in accordance with said detected feature.
Further embodiments include a method of configuring an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, there being provided a connector interface for connecting the reservoir with the infusion pump device, wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit and an identifying pattern of areas of different reflectivity or refractivity, where the method includes providing the reservoir/cap unit with representing data required to configure the pump for that particular reservoir/cap unit when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device, detecting the pattern using an optical emitter device and an optical detection device on the pump; and configuring the pump in accordance with the detected data.
An infusion pump system according to an embodiment of the present invention includes an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, where infusion pump device includes at least one electrical detection sensor element. The infusion pump system embodiment further includes a connector interface system for connecting the reservoir with the infusion pump device. In particular embodiments, the connector interface system has a cap configured to connect to the reservoir to form a reservoir/cap unit, and where at least one electrically detectable feature is arranged on the cap or the reservoir for detection by the at least one sensor element when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. In further embodiments, the connector interface system includes the reservoir to be received within the reservoir receptacle of the infusion pump device, where the reservoir contains or is to contain infusion media to be selectively dispensed from the reservoir when the reservoir is received within the reservoir receptacle. In further embodiments, the connector interface system includes an infusion set coupled to the cap via a tubing for conveying infusion media dispensed from the reservoir.
In further embodiments, the at least one electrically detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cap, the reservoir, a cannula, or a tubing connected between the cap and the cannula.
In particular embodiments, the at least one detectable parameter includes one or more of: the existence of one or more electrically detectable features on the cap; the location or pattern of locations of one or more electrically detectable features on the cap; the type of electrically detectable feature on the cap, the electrical resistance of the electrically detectable feature, or the electrical impedance of the electrically detectable feature.
In particular embodiments, the detectable parameter of the of at least one electrically detectable feature is associated with one or more characteristics that include one or more of: a type or identity of a manufacturer of the reservoir or the cap; a size of the reservoir or the cap; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date, or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir or the cap; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap was made, assembled, or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, or the cap is authorized to be used; a lot number or code associated with a batch in which the reservoir, the cap, or infusion media was made, cleaned, filled, or otherwise processed; a serial number; a unique ID; user identification information for authorized users; a type, length, or size of the cannula; or a type, length, or size of the tubing connected between the cap and the cannula.
In further embodiments, the at least one first electrically conductive contact member includes a plurality of first electrically conductive contact members arranged at different respective locations on the cap.
In further embodiments, the at least one first electrically conductive contact member includes a plurality of first electrically conductive contact members in locations on the cap that allow one or more of the first electrically conductive contact members to come into electrical contact with the at least one second electrically conductive contact member to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle.
In further embodiments, the at least one first electrically conductive contact member is arranged on the cap, at a location to come into electrical contact with the at least second electrically conductive contact member when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, but not in electrical contact with the at least one second electrically conductive contact member when the reservoir/cap unit is not fully received in the reservoir receptacle of the infusion pump device.
In further embodiments, each first electrically conductive contact member of each electrically detectable feature includes one or more of: (a) an electrically conductive metal member, (b) an electrically conductive plating, (c) an electrically conductive coating, (d) an electrically conductive ink, or (e) a smooth strip or pad of electrically conductive material.
In further embodiments, one or more of the first electrically conductive contact members includes a biased conductive portion that is biased radially outward relative to a housing of the cap.
In further embodiments, the infusion set further includes a cannula, and wherein the at least one electrically detectable feature has at least one detectable parameter that is associated with one or more characteristics of the cannula or the tubing of the infusion set.
In further embodiments, the characteristic of the cannula or the tubing of the infusion set includes a size or length of the cannula, or a size or length of the tubing.
In further embodiments, the infusion pump device includes electronics connected with an electronic memory, the electronics and electronic memory are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated with the at least one detectable parameter in a table or other data arrangement stored in the electronic memory.
In further embodiments, the infusion pump device includes electronics configured to record information in a memory, the information corresponding to one or more of: (a) at least one detectable parameter detected by the at least one sensor, (b) at least one characteristic associated with at least one detectable parameter detected by the at least one sensor, (c) location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter is detected, or (d) time information corresponding to a time or date when the at least one detectable parameter is detected.
In further embodiments, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one electrically detectable feature is detected by the sensor element.
In particular embodiments, the at least one second electrically conductive contact member is embedded in or affixed to a wall portion of the infusion pump device, within the reservoir receptacle.
In particular embodiments, the second electrically conductive contact member includes a biased portion that is biased radially inward relative to an axis of the reservoir receptacle, the axis of the reservoir receptacle being along the axis of the cap or of the reservoir when the reservoir/cap unit is received in the reservoir receptacle.
In particular embodiments, the second electrically conductive contact member includes a sheet or strip of electrically conductive metal material having two or more extension portions that are bent or folded partially to extend outward from the rest of the sheet or strip, the sheet or strip having sufficient flexibility to allow the extension portions to bend or fold further inward toward the rest of the sheet or strip when a pressing force is applied to the extension portions, and a natural spring force sufficient to bias the extension portions toward a non-pressed state.
A connector interface for connecting a reservoir containing an infusion media with an infusion pump device according to a further embodiment includes a cap configured to connect to the reservoir to form a reservoir/cap unit, where an electrically detectable feature having at least one first electrical contact is arranged on the cap or the reservoir, for selective connection with a sensor element in the infusion pump device when the reservoir of the reservoir/cap unit is received in a reservoir receptacle of the infusion pump device, wherein the selective connection conveys data.
In particular embodiments of such a connector interface, the data includes one or more of: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users.
An infusion pump system according to an embodiment of the present invention includes a connector interface as described above, and an infusion pump device having the reservoir receptacle for receiving the reservoir containing the infusion media, and for selectively dispensing the infusion media from the reservoir when the reservoir is received within the reservoir receptacle, wherein the infusion pump device includes a plurality of second electrical contacts forming the sensor element.
A further embodiment of such an infusion pump system includes electronics coupled to the plurality of electrical contacts of the sensor element to detect when said selective connection has been made indicating that the reservoir/cap unit is correctly received in the reservoir receptacle.
In a further embodiment of such an infusion pump system, the reservoir/cap unit is movable within the reservoir receptacle from a first position in which it is correctly received for operation with the infusion pump device and on partially received position, wherein the sensor element and the detectable feature are configured such that in the partially received position either none or different ones of said plurality of contacts connect with the at least one electrical contact and the electronics is configured to indicate that the reservoir/cap unit is not correctly received in the reservoir receptacle.
In a further embodiment of any of the above infusion pump systems, at least one electrical contact is configured in a given pattern such that when the reservoir/cap unit is received in the reservoir receptacle the selective connection indicates data about the cap, the reservoir, or infusion pump device.
In a further embodiment of any of the above infusion pump systems, the at least one electrical contact is connected to a chip inside the cap having an internal memory contouring data about the cap or the reservoir, and the sensor element and electronics are configured to receive the data for communication to the pump.
In a further embodiment of any of the above infusion pump systems, the electronically detectable feature includes an electrical resistance or an electrical impedance, wherein the sensor element is configured to detect the impedance and determine therefrom data about the cap (4), the reservoir (1), downstream connected structure, or the infusion pump device.
In a further embodiment of any of the above infusion pump systems, the infusion pump device includes electronics for controlling the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the electronics configured to inhibit dispensing of infusion media from the reservoir unless the at least one electrically detectable feature is detected by the at least one sensor element.
In a further embodiment of any of the above infusion pump systems, the electronics are connected with a memory that stores a table or other data arrangement, and the electronics are configured to control the selective dispensing of infusion media from the reservoir when the reservoir is received within the reservoir receptacle, the selective dispensing being based, at least in part on the one or more characteristics associated in the table or other data arrangement with the at least one detectable parameter of the electrically detectable feature.
In a further embodiment of any of the above infusion pump systems, the electronics are configured to record information in the memory, where the information corresponds to: (a) at least one detectable parameter detected by the at least one sensor, or (b) at least one characteristic associated in the table or other data arrangement with at least one detectable parameter detected by the at least one sensor.
In a further embodiment of any of the above infusion pump systems, the electronics are further configured to record location information corresponding to a geographic location of the infusion pump device when the at least one detectable parameter of the electrically detectable feature is detected.
In a further embodiment of any of the above infusion pump systems, the electronics are further configured to record time information corresponding to a time or date when the at least one detectable parameter of the electrically detectable feature is detected.
In a further embodiment of any of the above infusion pump systems, the at least one first electrical contact arranged on the cap includes one or more of: (a) an electrically conductive metal member, (b) an electrically conductive plating, (c) an electrically conductive coating, (d) an electrically conductive ink, (e) a biased conductive portion that is biased radially outward relative to an axis of the cap or the reservoir, or (f) a smooth, strip or pad configuration.
In a further embodiment of any of the above infusion pump systems, the second electrical contacts are attached to, embedded in, molded in, applied onto or affixed to a wall portion of the infusion pump device, within the reservoir receptacle.
In a further embodiment of any of the above infusion pump systems, the second electrical contacts: (a) have a smooth, strip or pad configuration; (b) include a biased portion that is biased radially inward relative to an axis of the reservoir receptacle, the axis of the reservoir receptacle being along the axis of the cap or of the reservoir when the reservoir/cap unit is received in the reservoir receptacle; or (c) include a sheet or strip of electrically conductive metal material having two or more extension portions that are bent or folded partially to extend outward from the rest of the sheet or strip, the sheet or strip having sufficient flexibility to allow the extension portions to bend or fold further inward toward the rest of the sheet or strip when a pressing force is applied to the extension portions, and a natural spring force sufficient to bias the extension portions toward a non-pressed state.
In a further embodiment of any of the above infusion pump systems: (a) each first electrically conductive contact member of the at least one electrically detectable feature is attached to a housing of the cap or to the reservoir; (b) the at least one electrically detectable feature includes a plurality of first electrically conductive contact members arranged at different respective locations on the cap or on the reservoir; (c) the at least one electrically detectable feature is arranged on the cap or on the reservoir, at a location to be detected by the at least one sensor element when the reservoir/cap unit is fully received in the reservoir receptacle of the infusion pump device, but not detected by the at least one sensor element when the reservoir/cap unit is not fully received in the reservoir receptacle of the infusion pump device; (d) the at least one electrically detectable feature includes a plurality of electrically detectable features in locations that allow the electrically detectable features to electrically interact with the at least one sensor element to provide detectable signals for detection of axial or rotational motion or position of the cap or the reservoir relative to the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle; or (e) the cap includes at least one thread arranged to engage a corresponding thread or groove in the infusion pump device when the reservoir/cap unit is received in the reservoir receptacle in the infusion pump device, wherein the at least one electrically detectable feature is located on the at least one thread.
A further embodiment of any of the above infusion pump systems includes electronics configured to detect electrical leakage between the plurality of second electrical contact, for example due to moisture or a saline environment, and to ignore said data in the presence of such leakage.
An infusion pump device according to a further embodiment includes a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing the infusion media from the reservoir when the reservoir is received within the reservoir receptacle, where the infusion pump device includes a plurality of second electrical contacts forming a sensor element to detect an electrical contact feature on the reservoir, representing its contents or characteristics of any tubing or infusion set connected thereto. The infusion pump device further includes electronics connected to the sensor element and configured to control said selective dispensing at least partially in accordance with said detected feature.
Further embodiments include a method of configuring an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, there being provided a connector interface for connecting the reservoir with the infusion pump device, wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit. The method includes providing the reservoir/cap unit with a first contact arranged in the pattern representing the data required to configure the pump for that particular reservoir/cap unit when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device; detecting the said pattern using a matrix of resiliently loaded contacts on the reservoir receptacle, when the reservoir/cap unit is received in the reservoir receptacle and deriving the data therefrom; and configuring the pump in accordance with the derived data.
Further embodiments include a method of configuring an infusion pump device having a reservoir receptacle for receiving a reservoir containing an infusion media, and for selectively dispensing infusion media from the reservoir when the reservoir is received within the reservoir receptacle, there being provided a connector interface for connecting the reservoir with the infusion pump device, wherein the connector interface has a cap configured to connect to the reservoir to form a reservoir/cap unit, where the method includes providing the reservoir/cap unit with a chip and contacts connected to the chip on a surface facing the infusion pump device. In such embodiments, the chip contains data required to configure the pump for that particular reservoir/cap unit when the reservoir of the reservoir/cap unit is received in the reservoir receptacle of the infusion pump device. The method in such embodiments includes connecting the contacts to corresponding contacts on the infusion pump device as the reservoir/cap unit is received in the reservoir receptacle; reading said data from the chip into the infusion pump device; and configuring the pump device in accordance with the read data.
A reservoir unit system for an infusion pump device according to an embodiment of the present invention includes a reservoir container having a neck portion and an interior volume for containing an infusion medium, where the neck portion has a port opening through which infusion media may be received into the interior volume of the reservoir, and where the neck portion has a flow channel with a first opening to the interior volume of the reservoir container and a second opening for connection in flow communication with a tubing. This reservoir unit system embodiment also includes a cap having a cap body supported in the neck portion of the reservoir for rotation about an axis between a first rotary position and a second rotary position, where the cap body has a first channel opening to the interior volume of the reservoir, and a second channel having first and second ends, the first end in fluid flow communication with the first channel in the cap body, and the second end.
This reservoir unit system embodiment may further include a transfer guard that is removably connected to the reservoir neck portion for selective rotation about the axis relative to the reservoir neck portion between a first transfer guard rotary position and a second transfer guard rotary position. The transfer guard is operatively engaged with the cap body for rotating the cap body from the first rotary position to the second rotary position as the transfer guard is selectively rotated from the first transfer guard rotary position to the second transfer guard rotary position. The second end of the second channel in the cap body is in fluid flow communication with the first opening of the flow channel in the neck portion when the cap body is in the first rotary position, and wherein the second end of the second channel in the cap body is out of fluid flow communication with the first opening of the flow channel in the neck portion when the cap body is in the second rotary position.
In particular embodiments: (a) the cap body has at least one extension configured to receive a manual force to rotate the cap body about the axis relative to the reservoir container, and the transfer guard is operatively engaged with the at least one extension of the cap body for rotating the cap body from the first rotary position to the second rotary position as the transfer guard is selectively rotated from the first transfer guard rotary position to the second transfer guard rotary position, where the transfer guard includes a transfer guard body having a first end for receiving the neck portion of the reservoir container, the transfer guard body having an opening through which the at least one extension of the cap body is received and an engagement surface for engaging the at least one extension of the cap body when the reservoir container is received in the first end of the transfer guard body, where the transfer guard body has a second end for receiving a portion of a supply container, the transfer guard configured to connect the supply container in fluid flow communication with the reservoir container when the reservoir container is received in the first end of the transfer guard body and the supply container is received in the second end of the transfer guard body; (b) the cap body has at least one extension configured to receive a manual force to rotate the cap body about the axis relative to the reservoir container, and the reservoir neck portion has at least one extension arranged in a position to align with the at least one extension of the cap body when the cap body is in the first rotary position, and arranged in a position out of alignment with the at least one extension of the cap body when the cap body is in the second rotary position; or (c) the cap body has an extension that has a longitudinal dimension extending outward relative to the axis, the reservoir neck portion has an extension that has a longitudinal dimension extending outward relative to the axis, where the longitudinal dimension of the extension of the cap body is directed in the same direction as the longitudinal dimension of the extension of the reservoir neck portion when the cap body is in the first rotary position, and where the longitudinal dimension of the extension of the cap body is directed in a different direction than the longitudinal dimension of the extension of the reservoir neck portion when the cap body is in the second rotary position.
In further embodiments, the cap includes a pierceable septum in the first channel of the cap body.
In further embodiments, the cap includes at least one detectable element that can be detected by a sensor on an infusion pump device, where the at least one detectable element is located on the extension.
In particular embodiments, the at least one detectable element includes at least one of a magnetically detectable element, an inductively detectable element, an optically detectable element, a mechanically detectable element, an electrically detectable electrical contact element, a radio frequency (RF) detectable element; or a radio frequency (RF) detectable element that includes an RFID tag. The detail and function of the detectable element and associated sensors is as described above.
A reservoir unit system for an infusion pump device according to another embodiment of the present invention includes a reservoir container having a neck portion and an interior volume for containing an infusion medium, where the neck portion has a port opening through which infusion media may be received into the interior volume of the reservoir container, and where the neck portion has a flow channel with a first opening to the interior volume of the reservoir container and a second opening for connection in flow communication with a tubing. This reservoir unit system embodiment further includes a cap structure having a moveable plunger body supported in the neck portion of the reservoir for linear motion along an axial direction of the reservoir container, between a first position and a second position. The plunger body has at least one passage for fluid flow communication through the plunger body between the port opening and the interior volume of the reservoir container. The cap structure has a bias member providing a bias force that biases the moveable plunger body toward the first position.
This reservoir unit system embodiment further includes a transfer guard having a first end that is removably connectable to the neck portion of the reservoir container, where the transfer guard includes an engagement portion arranged to engage the moveable plunger body and hold the plunger body in the second position against the bias force of the bias member when the transfer guard is connected to the neck portion of the reservoir container. The engagement portion is arranged to disengage the moveable plunger body to allow the moveable plunger body to move from the second position to the first position under the bias force of the bias member when the transfer guard is removed from the neck portion of the reservoir container.
The moveable plunger body has an outer surface arranged relative to the first opening of the flow channel in the neck portion of the reservoir container such that: (a) when the moveable plunger body is in the first position, the outer surface of the plunger body is aligned with the first opening of the flow channel to block fluid flow communication between the flow channel and the interior volume of the reservoir container, and (b) when the moveable plunger body is in the second position, the outer surface of the plunger body is sufficiently separated from the first opening of the flow channel to allow fluid flow communication between the flow channel and the interior volume of the reservoir container.
In particular embodiments, the engagement portion includes a hollow needle that provides a fluid flow communication path between first and second ends of the hollow needle.
In particular embodiments, the transfer guard includes a second end configured to interface with a supply container, the second end of the hollow needle being arranged in fluid flow communication with an interior volume of the supply container when the second end of the transfer guard interfaces with the supply container.
In particular embodiments, a portion of the hollow needle extends through the port opening with the first end of the hollow needle arranged in fluid flow communication with the interior volume of the reservoir container when the first end of the transfer guard is connected with the neck portion of the reservoir container.
In further embodiments, the neck portion of the reservoir container includes one or more first stop surfaces and one or more second stop surfaces arranged to hold the moveable plunger within the interior volume of the neck portion, yet allow movement of the moveable plunger between the first and second positions.
In particular embodiments, the one or more first stop surfaces include a ring-shaped projection arranged at or adjacent a section of the neck portion where an interior volume of the neck portion opens into the rest of the interior volume of the reservoir container, and the one or more second stop surfaces include a ring-shaped projection arranged at or adjacent the port opening of the reservoir container.
In particular embodiments, one or more of the first and second stop surfaces are (a) formed integral with the neck portion of the reservoir container as a unitary molded structure, or (b) formed as separate elements that are fixed to the neck portion of the reservoir container.
In further embodiments, a pierceable septum is provided within the neck portion of the reservoir container, adjacent the port opening of the reservoir container, the pierceable septum arranged to be pierced by the second end of the hollow needle when the second end of the transfer guard is interfaced with the neck portion, the pierceable septum arranged to seal the port opening of the reservoir container when the second end of the transfer guard is not interfaced with the neck portion of the reservoir container.
In further embodiments, the cap structure includes at least one detectable element that can be detected by a sensor on an infusion pump device, where the at least one detectable element is located on the moveable plunger or the bias member.
In particular embodiments, the at least one detectable element includes at least one of a magnetically detectable element, an inductively detectable element, an optically detectable element, a mechanically detectable element, an electrically detectable electrical contact element, a radio frequency (RF) detectable element; or a radio frequency (RF) detectable element that includes an RFID tag. The detail and function of the detectable element and associated sensor is the same as set out in respect of the earlier described embodiments.
In the following description, reference is made to the accompanying drawings which form a part of this application and which illustrate several embodiments of the present invention. It is understood that other embodiments may be utilized and structural and operational changes may be made without departing from the scope of the present invention.
In various drawings, like numerals are used to represent the same elements or similar elements that may perform or operate in a similar manner. The use of the term “and/or” herein is intended to represent an “inclusive OR.” In addition, the user of the term “or” herein is intended to represent an “inclusive OR” except where such a meaning would not make sense.
Embodiments of the present invention relate to connection interfaces for syringes and reservoirs. Particular embodiments relate to connection interfaces for interfacing a syringe or reservoir (such as reservoir 1 described below) to an infusion pump device (such as infusion pump device 30 described below), an infusion set tubing (such as tubing 52 described below), or both. Further embodiments relate to infusion pump systems and infusion set systems that include such connection interfaces, and to methods of making and using such connection interfaces and systems.
An infusion pump system according to an embodiment of the present invention is shown, in a partially exploded, perspective view, in
As described below, the reservoir 1 is configured to be received within a receptacle 32 of the infusion pump device 30 and to interface with a drive device (not shown) located within the infusion pump device, for selectively driving infusion media from the reservoir in a controlled manner. The reservoir 1 is also configured to be connected in fluid flow communication with the infusion set 50, for providing a flow path for infusion media from the reservoir to a user. In particular embodiments described herein, the connection interface 40 is configured to connect and interface the reservoir 1 with the infusion set 50 and with the infusion pump device 30, using releasable couplers.
The infusion set 50 includes a tubing 52 and a needle or cannula housing 54. In particular embodiments, the tubing 52 may be generally flexible and bendable, but may also include or be encased in a protective sheath made of a suitably rigid material or is otherwise configured to inhibit kinking of the tubing 52. The needle or cannula housing 54 is configured to be secured to a user, such as, but not limited to, adhering the housing 54 to a user's skin, at a desired infusion location on the user. The housing 54 may include adhesive material on its base, or other suitable material or structure, for securing the housing 54 to the user's skin. The housing 54 contains and supports a hollow needle or cannula 56 that is in fluid flow communication with the tubing 52 and that is configured to extend (or to be extended) out from the base and into the user's skin, when the housing 54 is secured to the user's skin. When extended into a user's skin, the hollow needle or cannula 56 can convey infusion media from the tubing 52, into the user. Examples of infusion sets that may be employed as an infusion set 50 include, but are not limited to a Quickset® infusion set, a Silhouette® infusion set, a Sure-T® infusion set, a Mio® infusion set, or the like. However, other embodiments of the present invention may include or operate with other suitable infusion set configurations.
Examples of infusion pump devices that may be employed as an infusion pump device 30 include, but are not limited to a Paradigm® infusion pump, a Revel™ infusion pump, a MiniMed® 530G infusion pump, MiniMed 640G, or the like. Other examples include those described in U.S. Pat. Nos. 4,562,751; 4,678,408; 4,685,903; 5,080,653 and 5,097,122, each of which is incorporated by reference herein, in its entirety. However, other embodiments of the present invention may include or operate with other suitable infusion pump devices. The infusion pump device 30 includes a drive motor or other drive device with drive linkage (not shown) arranged to engage corresponding drive linkage 1′ on a piston in the reservoir 1, when the reservoir 1 is properly received within the reservoir receptacle 32. In particular embodiments, the drive linkage 1′ corresponds to an “engagement side 128” described in U.S. Pat. No. 8,167,846 titled “Reservoir Filling Systems And Methods”, which is incorporated herein by reference, in its entirety. In other embodiments, other suitable drive linkage structure is employed as the drive linkage 1′ for operatively coupling the piston in the reservoir 1 to the drive device in the infusion pump device 30, when the reservoir 1 is received in the reservoir receptacle of the infusion pump device 30.
The drive device operates to selectively move the piston within the syringe or reservoir, to drive fluidic media from the reservoir and to the user. The infusion pump device 30 includes control electronics connected to the drive device for controlling the drive device to selectively drive the piston and dispense fluid from the reservoir and into the tubing 52 of the infusion set 50. In particular embodiments, the control electronics are programmable to deliver fluid from the reservoir continuously or at one or more predefined intervals over time, in accordance with one or more programmed delivery routines. The control electronics may be further configured to operate one or more display devices and user input devices on or associated with the infusion pump device. The control electronics may include or be connected with the electronics 60 described below with reference to
In the embodiment of
The base 2, swage 3 and the cap 4 may be made of any one or more suitable materials having sufficient rigidity and strength to operate as described herein, including, but not limited to plastic, metal, ceramic, composite or other suitable material. In one example, the base 2 is made of a metal material that can be crimped over the crimp seal swage 3, the base is made of a metal foil material that can be formed over a port of the reservoir 1, and the base 2 is made of a plastic material (such as, but not limited to a plastic material that is molded into a single unitary structure having the shape of the cap 4). In particular embodiments, the cap 4 is made of a molded plastic material.
The cap 4 of the connector interface 40 connects, in fluid flow communication, with the tubing 52 of the infusion set 50. An example embodiment of the cap 4 is shown in
The cap 4 portion of the connector interface 40 removably attaches to the base 2 (and, thus, to the reservoir 1) with a first releasable coupler. In embodiments in which the base 2 is omitted, the first releasable coupler removably attaches the cap 4 directly to the reservoir 1. In addition, the cap 4 removably attaches to the infusion pump device 30 with a second releasable coupler. In particular embodiments, the first releasable coupler includes any suitable structure that allows selective coupling and decoupling of the cap with the base 2, while the second releasable coupler includes a similar or different structure that allows selective coupling and decoupling of the cap with the infusion pump device 30. Example embodiments of first releasable couplers for coupling a cap to a base of a connection interface, and second releasable coupler for coupling a cap to an infusion pump device are described in U.S. Pat. No. 6,585,695, which is incorporated herein, in its entirety.
In one embodiment, the first releasable coupler includes one or more protrusions or detents provided on one of the base 2 or the cap 4, and corresponding openings in the other of the base 2 or the cap 4, for receiving the protrusions or detents. An example embodiment of a first releasable coupler is described with reference to the cap 4, base 2 and reservoir 1 shown in
In the embodiment of
The base 2 is connected to the reservoir 1, to form an integrated unit with the reservoir 1. The integrated unit of the reservoir 1 and the base 2 is, in turn, connected to the cap 4. For example, in the embodiment of
In particular embodiments, the internal needle 9 of the cap 4 is disposed so that when the base/reservoir unit is fully inserted in the cap 4, the needle pierces the septum (not shown) of the reservoir 1. In such embodiments, the insertion motion and force of the base/reservoir unit into the open end of the cap 4, to the point where the detents 8 abut the annular stop shoulder 16, causes the needle 9 to pierce the reservoir septum, permitting fluid in the reservoir to flow into the needle 9 and the tubing 52 of the infusion set 50.
To disconnect the base 2 from the cap 4, the base 2 is manually rotated relative to the cap 4 in a reverse direction relative to the direction for connection. This causes the detents 8 to move along the cam surfaces 17 into re-alignment with the entry slots 15. When the detents 8 are moved to re-aligned with the entry slots 15, the cap 4 and base 2 can be separated with minimal longitudinal force.
As shown in
When properly installed within the reservoir receptacle 32, the cap 4 (or base/reservoir/cap unit) is releasably secured in the housing of a infusion pump device 30, for example, with the second releasable coupler. In the embodiment of
Various embodiments described herein employ a reservoir connection apparatus that includes a cap (such as cap 4 or other cap embodiments) that attaches to a reservoir (such as reservoir 1 or other reservoir embodiments). While the same or different reference numbers are used herein to designate various cap embodiments (including reference numbers 4, 204, 404, 504, 704, 804, 904a-e, 964, 974, 984, 994, 1004, 1014, 1024 and 1050), it will be understood that a cap of any one of the disclosed embodiments may be employed and operate in a manner the same or similar to the cap described with respect to another embodiments herein, where such employment or operation is not inconsistent with the configuration of the cap. In addition, it will be understood that features of a cap of any one of the disclosed embodiments may be included or incorporated with or in a cap of any of the other disclosed embodiments and that, where applicable, caps of various embodiments may be interchanged or modified in accordance with other embodiments. Also, while the same or different reference numbers are used herein to designate various reservoir embodiments (including reference numbers 1, 201 and 301), it will be understood that a reservoir of any one of the disclosed embodiments may be employed and operate in a manner the same or similar to the reservoir described with respect to another embodiments herein, where such employment or operation is not inconsistent with the configuration of the reservoir.
According to embodiments of the present invention, when the cap 4 (or the corresponding reservoir/base/cap unit) is received in the infusion pump device 30, the system is configured to detect a proper (or improper) coupling of the cap 4 (or of the reservoir/base/cap unit) with the infusion pump device 30. In further embodiments, the sensor and detectable feature interact in a manner to communicate certain information relating to a characteristic of one or more of the reservoir 1, reservoir contents, cap 4, infusion set 50 or infusion pump device 30.
In other words the detectable feature/sensor combination has one or both of two primary functions, these being:
(a) to detect the state of closure/seating of the reservoir within the pump; and
(b) to convey details of the reservoir/cap/infusion set combination to the pump.
These two functions can be performed by a single detectable feature/sensor combination or by respective detectable feature/sensor combinations performing the individual functions. In the latter case any of the arrangement hereinafter described for detecting closure may be combined with any of the arrangements for deriving data and the reservoir/cap infusion set combination. For example an RFID arrangement for conveying data about the reservoir/cap/infusion set combination can be combined with a magnetic or optical technique to detect closure.
The type of details/data falling within category (b) can either be of an information nature, such as the reservoir serial number or a unique ID or can be information to be used by the pump in determining the user's authority or the patient dosage, for example, the identity and concentration of the drug, e.g. insulin or the length, type or size of tubing, which may be relevant for the pump to determine allowable back pressure before an occlusion alarm sounds.
In particular embodiments, one of the cap 4 and the infusion pump device 30 is provided with at least one sensor, and the other of the cap 4 and the infusion pump device 30 is provided with at least one detectable feature that is detected by the sensor when the cap 4 is properly and operably coupled with the infusion pump device 30. In further embodiments, the cap 4 and the infusion pump device 30 are each provided with at least one sensor and at least one detectable feature, arranged to interact with at least one corresponding detectable feature and sensor on the other of the cap 4 and infusion pump device 30. For example, the sensor and detectable feature may interact in a manner such that the sensor detects the presence or position (or both) of the detectable feature or other parameters of the detectable feature, when the cap 4 is properly received or operatively coupled (or both) with the infusion pump device 30. As referenced herein, proper receipt or operative coupling corresponds to a position of the cap 4 (or base/reservoir/cap unit) at which the drive linkage 1′ of the reservoir 1 is operatively engaged with the drive device in the infusion pump device 30. In other embodiments, proper receipt or operative coupling corresponds to another suitable, predefined position of the cap 4 (or base/reservoir/cap unit).
In the embodiment of
As discussed above, in various embodiments, element 34 on the infusion pump device 30 is at least one sensor or detectable feature (or both), and element 42 on the cap is at least one of the other of the sensor or detectable feature (or both). For purposes of clarity in the disclosure, further description of various embodiments refers to the element 34 on the infusion pump device 30 as at least one sensor, while element 42 on the cap 4 is referred to as at least one detectable feature. However, it will be understood that in other embodiments, the element 34 on the infusion pump device 30 can be at least one detectable feature (or a combination of at least one sensor and at least one detectable feature), while element 42 on the cap 4 can be at least one sensor (or a combination of at least one detectable feature and at least one sensor).
a. Magnetic Detection
As described above, either one of the element 34 or element 42 may include at least one sensor element, while the other of the element 34 or element 42 includes at least detectable feature. In particular embodiments, each detectable feature includes one or more magnets, while the sensor element is configured to detect the presence or other characteristic of a magnet, when in a sufficient proximity or location relative to the magnet. Such sensor(s) include, but are not limited to, magnetoresistance (MR), Hall effect, magnetic reed, or other sensor device that provides a detectable response to the presence or alignment (or both) of a magnet. Magnets include any suitable permanent magnet material. In further embodiments, the magnets include, but are not limited to, magnetically conductive materials connected with permanent or electromagnets magnets, electromagnets, or other suitable magnetized material or device.
In particular embodiments, the element 42 on the cap 4 includes at least one magnet, while the element 34 on the infusion pump device 30 includes at least one sensor. In that embodiment, the cap 4 need not include sensor electronics and, thus, may be made to be more readily disposable after one use (or a predefined number of uses, a predefined time period of use, or a combination thereof).
For example, element 42 represents one or more magnets carried by the cap 4 at a predefined location on or in the cap housing, while element 34 represents one or more sensors at a predefined location in or adjacent the reservoir receptacle 32 of the infusion pump device 30. In particular embodiments, the one or more magnets (element 42) are embedded within the structure of the cap housing, so as to be out of view and out of contact with users during normal operation of the system. In other embodiments, the one or more magnets may be attached to a surface of the cap housing or otherwise secured to the housing of the cap 4.
In particular embodiments, element 34 is a single sensor device, while element 42 is a single magnet, where the elements 34 and 42 are arranged such that they come into alignment or proximity (or both) when the base/reservoir/cap unit is fully or properly received in the reservoir receptacle 32 of the infusion pump device 30. In other embodiments, element 34 and element 42 comprises a plurality of sensor devices and a plurality of magnets, respectively.
For example,
In the embodiment of
In the embodiment in
In particular embodiments in which multiple sensor or multiple magnet elements (or both) are employed on one or both of the cap 4 and infusion pump device 30, the multiple elements may be arranged to allow detection of various predefined states of the cap 4. Thus, in example embodiments, the multiple elements are arranged spaced apart around the circumference of the axis A to allow detection of the rotational position (or movement) of the cap 4 around the axis A, relative to the infusion pump device 30. Alternatively or in addition, the multiple elements are arranged spaced apart in the axial dimension A of the cap 4 to allow detection of the linear position (or movement) of the cap 4 along the axis A, relative to the infusion pump device 30. In other embodiments, one or more elements are arranged to detect angular differences (or movement) between the axial dimension A of the cap and the axial dimension of the reservoir receptacle 32. Accordingly, in different embodiments, the sensor element(s) provide one or more sensor signals representing a rotational position of the cap 4, a linear position of the cap 4, an angular position of the cap 4, or any combination thereof.
In further embodiments in which multiple magnet elements are employed, at least two of the magnet elements have mutually different detectable parameters, such as, but not limited to, different magnetic polarity directions, field strengths, locations or patterns of magnets on the cap, or any combination thereof. In those embodiments, the sensor element(s) is configured to detect and discern one magnet element from the other, based on the detected parameter. In those embodiments, the different magnets (with different detectable parameters) are arranged at a plurality of predefined locations on the cap 4 (or the infusion pump device 30) to be detected by the sensor element(s), as described above, when the cap 4 is in different respective positions within the reservoir receptacle 32 of the infusion pump device 30.
In particular embodiments, the cap 4 includes one or more magnets that are integrated into the cap. Example embodiments of a cap 4 are shown in
The magnet (element 42) may be secured to the housing 5 of the cap 4 in any suitable manner, including, but not limited to a swaging, mechanical fitting, adhering with an adhesive material or mechanical connector, soldering, welding, heat staking, molding, co-molding or the like. For example, a magnet (element 42) may be molded onto or into the cap housing 5, as part of a process of forming (by molding) the cap housing 5, or as a process carried out after forming (by molding or otherwise) the cap housing 5. Such molding processes can include, but are not limited to, injection molding, molding with an insert mold, molding in a multi-shot (e.g., a two-shot) mold, or other suitable molding processes.
In the embodiment of
In the embodiment of
In further embodiments, the magnet (element 42) may be secured to the cap 4 in any other suitable manner. In embodiments as described herein, when the cap 4 (or base/reservoir/cap unit) is installed within the reservoir receptacle 32 of the infusion pump device 30, the magnet (element 42) is located in a position for magnetic detection by or other interaction with the sensor element (element 34) located on the infusion pump device 30. In particular embodiments, the sensor element (element 34) and associated electronics 60 (
To illustrate how multiple sensors and multiple magnetic elements can lead to a more accurate detection of the angular position of a cap in an infusion pump device reference is again made to
Considering now the operation,
Accordingly, the more accurate closed position can be detected by an exact match between the outputs of the second and third sensors. The situation shown in
A yet further refinement of this system would be to arrange the first magnet 42A on the cap to have an opposite polarity to the second magnet 42B. In the simplest case this would enable the first sensor 34 (where only one sensor is provided) to distinguish immediately between the open position shown in
In a situation with multiple sensors and magnets in which the sensors are equally spaced with an angle theta and the magnets are spaced from the first magnet 42A by an angle of one half (2n+1) theta and with alternating pole polarities in the magnets starting from the first magnet 42A and progressing in an anticlockwise direction the closed position would be detected when the first magnet 42A aligns with the first sensor 34 and the second magnet 42B is equidistant between the second and the third sensors 34 and the third magnet (not shown) is equidistant between the third and the fourth sensors. In this situation the magnetic fields from the second and third magnets would cancel at the third sensor and the magnetic fields detected by the second and fourth sensors would be of equal and opposite polarity. The exact mid-position, hence closed position of
In the embodiment in
In such embodiments, the sensor (element 34) or a separate dedicated sensor (not shown) may be configured to detect installation activities (such as, but not limited to, an insertion of a cap 4 (or base/reservoir/cap unit) into the reservoir receptacle) or an activation of a designated manual operator (e.g., manually activated by the user during setup). Upon detection of an installation activity, the sensor (element 34) and associated electronics are activated to poll or read continuously or intermittently, to seek a magnetic field or signature from a magnet (element 42). Upon detection (or other interaction) with a magnet (element 42), the sensor element (element 34) and associated electronics may be configured to read magnetic field information to determine one or more of a presence, connection state, position, or other detectable parameter associated with the cap 4 (or base/reservoir/cap unit).
Thus, in particular embodiments, the infusion pump device 30 may be configured to have a useful life that is significantly greater than the useful like of the cap 4 (or base/reservoir/cap unit). In such embodiments, a cap 4 (or base/reservoir/cap unit) may be installed, replaced with a new or different cap (or base/reservoir/cap unit), or re-installed in the infusion pump device 30, as appropriate. Particular embodiments are configured such that electronics (e.g., electronics 60 in
In particular embodiments, one or more detectable parameters of the magnetic field of a magnet (element 42) may be associated with one or more characteristics of the cap 4 (or other component of the base/reservoir/cap unit), infusion set, infusion pump device 30, user. For example, the shapes, sizes, grades, materials, direction of magnetization, and other properties of magnets (elements 42) can influence detectable parameters of the magnetic fields provided by such magnets (elements 42). Accordingly, embodiments are configured such that the output of the sensor (element 34) is dependent on one or more detectable parameters of the magnetic field of the magnet (element 42). In particular embodiments, the one or more detectable parameters of the magnet (element 42) on a given cap 4 (or base/reservoir/cap unit) provides a signature that is distinguishable from one or more other magnets (elements 42) on one or more other caps (or base/reservoir/cap unit). Thus, each different cap 4 (or base/reservoir/cap unit) can have a different detectable signature relative to each other cap 4 (or base/reservoir/cap unit). Alternatively, groups or classes of multiple caps 4 (or base/reservoir cap units) can have the same or similar signature as other caps 4 (or base/reservoir/cap units) in the same group or class, but have different detectable signature from one or more (or all) caps (or base/reservoir/cap units) in one or more (or all) other groups or classes.
In one embodiment, a property of the magnet (element 42) that is selected or configured for detection is the magnet grade. In such embodiments, different caps 4 (or base/reservoir cap units), or different groups of caps 4 (or base/reservoir cap units) can have a different grade of magnet than other caps 4 (or base/reservoir/cap units) or other groups of caps 4 (or other groups of base/reservoir/cap units). For example, caps 4 (or base/reservoir/cap units) having respectively different grades of magnets (elements 42) can provide signatures that are the same shape, but respectively different in amplitudes. Thus, in particular embodiments, one or more characteristics of the cap 4 (or base/reservoir/cap unit), infusion set, infusion pump device, or user is associated with a grade of magnet (element 42) or its associated amplitude signature.
In another embodiment, a property of the magnet (element 42) that is selected or configured for detection is the magnet shape and/or the magnet size. In such embodiments, different caps 4 (or base/reservoir cap units), or different groups of caps 4 (or base/reservoir cap units) can have a different magnet shapes or sizes than other caps 4 (or base/reservoir/cap units) or other groups of caps 4 (or other groups of base/reservoir/cap units). For example, caps 4 (or base/reservoir/cap units) having respectively different sizes or shapes of magnets (elements 42) can provide signatures that are different directions, shapes and/or amplitudes. Thus, in particular embodiments, one or more characteristics of the cap 4 (or base/reservoir/cap unit), infusion set, infusion pump device, or user is associated with a shape or size of magnet (element 42) or its associated amplitude signature.
Examples of different magnet shapes that provide different magnet field directions or shapes are shown in
In another embodiment, a property of the magnet (element 42) that is selected or configured for detection is the polarity or magnetic field direction. In particular embodiments, the sensor (element 34) is configured to provide a first output when in detectable presence of a magnet (element 42) having a first field direction, and a second output when in detectable presence of a magnet (element 42) having a second field direction that is opposite to the first field direction. For example, the sensor (element 34) may be configured to detect and differentiate between a magnet having a south facing (seeking) pole and a magnet having a north facing (seeking) pole.
In such embodiments, different caps 4 (or base/reservoir cap units), or different groups of caps 4 (or base/reservoir cap units) can have a different magnet pole directions than other caps 4 (or base/reservoir/cap units) or other groups of caps 4 (or other groups of base/reservoir/cap units). For example, one or more caps 4 (or base/reservoir/cap units) having magnets (elements 42) with north poles directed in a first direction can provide signatures that are detectably different from one or more (or all) other caps 4 (or base/reservoir/cap units) having magnets (elements 42) with south poles directed in the first direction. In such embodiments, different caps 4 (or different base/reservoir/cap units or associated infusion sets) can employ the same magnet shape and size, but arranged in different pole directions. Thus, in particular embodiments, one or more characteristics of the cap 4 (or base/reservoir/cap unit), infusion set, infusion pump device, or user is associated with a pole direction of the magnet (element 42).
Thus, for example, with reference to the partial cross-section view of the cap 4 (or base/reservoir/cap unit) and the infusion pump device 30 in
Accordingly, in particular embodiments, one or more of the shapes, sizes, grades, materials and other properties of magnets (elements 42) provides detectable parameters or a signature that is associated with one or more predefined characteristics of the cap 4 (or other component of the base/reservoir/cap unit), infusion set, infusion pump device 30, user. In particular embodiments a combination of such magnet properties are selected or associated with one more characteristics of the cap 4 (or other component of the base/reservoir/cap unit), infusion set, infusion pump device 30, or user.
Certain embodiments in
Particular embodiments are configured to allow detection of different characteristics of a the cap 4 (or other components of the base/reservoir/cap unit or connected infusion set), based on one or more detected parameters of the magnet (element 42). In certain embodiments, such characteristics may include, but are not limited to, the type or features of the infusion set that is connected to the cap 4. For example, a cap (or base/reservoir/cap unit) may be configured to connect with a variety of different infusion set products (such as, but not limited to the following infusion set products: Quick-Set® infusion set, Silhouette® infusion set, Sure-T® infusion set, Mio® infusion set, or the like). In addition, different infusion sets may be configured with a variety of different feature options for meeting user needs or preferences, such as, but not limited to, tubing length, cannula length and cannula type. In particular embodiments, different infusion sets, features and options may be associated with different respected detectable parameters of the magnet (element 42) and, thus, differentiated based on detected parameters of the magnet (element 42).
The sensor (element 34) in particular embodiments described herein may include one or more Hall effect sensors or other suitable devices, that varies an output voltage in response to changes in a magnetic field. Such sensors can be contained in a suitably sealed package that inhibits passage of dust, dirt, mud or water from the external environment to the sensor electronics. Such sensors can be configured in a surface mount package, in a single in-line package, or other suitable arrangement, for example, mounted on a circuit board within the infusion pump device 30, at a location that is sufficiently adjacent and oriented relative to the magnet (element 42) for proper detection when the cap (or base/reservoir/cap unit) is installed on the infusion pump device 30.
For maximizing sensitivity of a Hall effect sensor, it can be desirable to arrange the magnet (element 42) such that, during detection operations, flux lines of the magnet (element 42) are perpendicular (or generally perpendicular) to a sensing area of the Hall effect sensor, e.g., a defined surface area (or plane) of a semi-conductor material in the sensor. In addition, the size of the magnet (element 42) and its proximity to the sensor (element 34) may be selected for improved detection sensitivity.
In particular embodiments, the magnet (element 42) may be configured in the shape of a segment of an arc, but is magnetized and oriented in a manner to provide higher flux density in a selected direction to accommodate a desired position of the sensor (element 34), or a desired position of a circuit board on which the sensor (element 34) is mounted.
For example, an arc-shaped magnet (element 42) that is magnetized through its circumference is shown in
Another example of an arc-shaped magnet (element 42) is shown in
The drawing in
Another example of an arc-shaped magnet (element 42) is shown in
The drawing in
In any of the embodiments of
Accordingly, in particular embodiments, the magnetization orientation of the magnet (element 42) may be selected (e.g., from among circumferential, radial, axial or other suitable orientations), to accommodate a desired position or orientation of the sensor (element 34) in the infusion pump device 30 (or a desired position or orientation of the circuit board on which the sensor (element 34) is mounted).
In further embodiments, the sensor (element 34) is configured to detect and differentiate between different magnetization orientations (e.g., from among circumferential, radial, axial or other suitable orientations) of magnets (elements 42) on different caps 4 (or base/reservoir/cap units). Thus, in particular embodiments, the orientation or direction of magnetization of the magnet (element 42) relative to a particular orientation and direction of the sensor plane of the sensor (element 34), or of the plane of the circuit board on which the sensor (element 34) is mounted, is a detectable parameter that can be associated with one or more characteristics of the cap 4 (or the base/reservoir/cap unit or the infusion set connected to the cap 4).
A Hall effect sensor can operate as an analog transducer, directly returning a voltage that is proportional to the applied magnetic field, and can be sensitive to both positive and negative fields. A linear Hall effect sensor can provide a linear response as shown in the graph of
In further embodiments, a Hall effect sensor (element 34) includes or is coupled with electronic circuitry that allows the sensor to operate with digital (on/off) switch modes as a digital Hall effect sensor. Such electronic circuitry may be in or associated with an electronic circuit connected with the sensor (element 34) as described with reference to
A digital Hall effect sensor (element 34) according to particular embodiments may include a unipolar sensor that employs a single polarity to both operate and release, as the magnetic field moves in or out of range (e.g., as the magnet (element 42) is moved toward or away from the sensor (element 34)). Such unipolar can be configured to be sensitive to one of either a North magnetic pole or a South magnetic pole.
A digital Hall effect sensor (element 34) according to further embodiments may include an omnipolar sensor that operates with either a North magnetic pole or a South magnetic pole. Such omnipolar sensors can be turned On when in a magnetic field of sufficient strength and remains on until the magnetic field is removed. With an omnipolar sensor, the magnet (element 34) may be mounted with either the North pole or the South pole facing outward, which can simplify manufacturing processes.
Yet further embodiments employ a bipolar digital Hall effect sensor (element 34) that operates to turn On (from an Off state) when in the presence of a sufficiently strong magnetic field of a first polarity (such as, but not limited to South), and then to turn Off (from an On state) when in the presence of a sufficiently strong magnetic field of a second polarity (such as, but not limited to North). In other embodiments, a bipolar digital Hall effect sensor (element 34) is employed to discriminate between North and South poles based on a detected magnetic field, to determine the polarity direction of a magnet (element 42) in the range of the sensor (element 34). Thus, in particular embodiments, bipolar digital Hall effect sensors (elements 34) are employed to provide the capability to differentiate between different infusion sets or other characteristics of the cap 4 (or of the base/reservoir/cap unit or the infusion set connected to the cap 4). For example, a cap 4 (or base/reservoir/cap unit) having a magnet (element 42) that has a first polarity direction (such as, but not limited to North facing upward or outward) may include one or more first predefined characteristics (such as, but not limited to, a first type of infusion set), while a cap 4 (or base/reservoir/cap unit) having a magnet (element 42) that has a second polarity direction (such as, but not limited to South facing upward or outward) may include one or more second predefined characteristics different from the first predefined characteristic (such as, but not limited to, a second type of infusion set that is different from the first type).
In further embodiments, the sensor (element 34) described herein may include one or more Magneto-Resistive (MR) or Anisotropic Magneto-Resistive (AMR) sensors or other suitable devices that employ a paramagnetic material. Embodiments of such MR or AMR sensors may be arranged in a Wheatstone Bridge (or series of Wheatstone Bridges), to sense changes in the resistance of the paramagnetic material resulting from an incident magnetic field. In particular embodiments, such sensor arrangements may provide a maximum resistance value when the direction of the current is parallel to an applied magnetic field, providing a null or zero output voltage. In further embodiments, such devices may provide an output voltage that varies with the direction of the incident magnetic field, such that an incident angle of the magnetic field can be detected and differentiated. In such embodiments, the magnetic field incident angle can be a detectable parameter that is associated with one or more predefined characteristics of the cap 4 (or the base/reservoir/cap unit or the infusion set connected to the cap 4) that carries the magnet (element 42) producing the incident field.
Alternatively, or in addition, an MR or AMR sensor (element 34) can detect and differentiate between different magnitudes of incident magnetic fields. In such embodiments, the magnetic field magnitude can be a detectable parameter that is associated with one or more predefined characteristics of the cap 4 (or the base/reservoir/cap unit or the infusion set connected to the cap 4) that carries the magnet (element 42) producing the incident field.
In particular embodiments, an MR or AMR sensor (element 34) is connected to operate with digital (on/off) switch modes, similar to the digital Hall effect sensor embodiments described above. However, for maximizing sensitivity of a MR or AMR sensor, it can be desirable to arrange the magnet (element 42) such that, during detection operations, flux lines of the magnet (element 42) are in or parallel to (or generally parallel to) a sensing area of the sensor, e.g., a defined surface area (or plane) of a paramagnetic material in the MR or AMR sensor. For example, an AMR sensor (element 34) may be arranged on a planar surface of a circuit board that faces similar to the direction of the circuit board 41 in
As relative motion of the magnet (element 42) and the sensor (element 34) occurs in the direction of the sensitive axis 71, the output of the sensor (element 34) changes toward a maximum output level, where the maximum output is provided when the magnet (element 42) is positioned such that the sensor (element 34) is at the midpoint between the North and South poles of the magnet (element 42). The U-shaped curve 73 in
Alternatively, by orienting the MR or AMR sensor (element 34) with its sensitive axis 71 perpendicular to the direction of magnetization of the magnet (element 42), as shown in
For example, with reference to the arrangement in
Similar arrangements and outputs can be described for Hall effect sensors (as element 34), as described above. However, an S-shaped curve similar to curve 75 in
According to further embodiments of the present invention, a compass-type sensor element (such as a magnetometer) may be utilized in place of, or in addition to, the sensor element (element 34) in the infusion pump device 30. The compass-type sensor element may be one used popularly in mobile phones that provide compass functionality to the mobile phone via a Compass App, such as in the APPLE® IPHONE®. The compass-type sensor element may be configured to interact with a compass sensor detectable feature element, such as, but not limited to a magnet (element 42), a concave or circular (magnetic/metallic) disk, or any suitable component or shape or combination thereof that produces a magnetic field that acts as an “Earth” to the compass-type sensor element, such that depending on the orientation of the compass sensor detectable feature element that is arranged on the cap 4 (and/or base, reservoir, tubing, etc.), a resolution of 360 degrees, finer or coarser, may be possible. Such embodiments can provide further ways to differentiate between various caps 4 (and/or base, reservoir, tubing, etc.) that may be available to the user and automatically detectable by the infusion pump device 30.
In particular embodiments, detectable resolutions (degrees or ranges of degrees) can be parameters that are associated with different characteristics of the cap 4 (or other components of the base/reservoir cap unit or connected infusion set), where such associations can be stored in electronic memory and employed by processing electronics (such as, but not limited to memory 66 and processing electronics 62 of electronic circuit 60) as described below with respect to
Once the infusion pump device 30 detects the tubing length, the infusion pump device 30, for example, may automatically set the priming sequence for the detected tubing length (and/or perform one or more other predefined tasks that depend or relate, at least in part, to the detected tubing length). Such embodiments can further automate infusion media delivery (such as, but not limited to insulin delivery), thus making therapy easier for the user.
In particular embodiments, the sensor (element 34) includes an AMR angle sensor that is configured to detect one or more magnetic field angles. For example, the sensor (element 34) may include an AMR angle sensor having dual Wheatstone bridges that are offset from each other by 45°. Such embodiments may be configured to detect the angle of orientation of the magnet (element 42) in the cap 4 (or base/reservoir/cap unit) relative to the sensing plane of the sensor (element 34).
Referring briefly back to
If more information is to be conveyed it is proposed to mount the magnet within the cylindrical outer wall of the cap such that its field (North-South direction) is at an angle with respect to the axis of the cap. In other words at an angle with respect to the direction of the cylindrical wall itself such as to lie on a notional helix running around the wall. As there are a large number of possible angular orientations, a greater amount of information can be conveyed by the selection of the angle. This can be implemented in two possible ways. Either a bar magnet can actually be mounted at an angle within the cylindrical surface of the cap or a piece of magnetizable material can be mounted vertically aligned within the cylindrical wall of the cap such as shown in
In the embodiment illustrated in
An example of a commercially available AMR angle sensor is the ADA 4571 manufactured by Analog Devices of 1 Technology Way, P.O. Box 9106, Norwood, Mass. 02062-9106, United States of America. This device is an integrated AMR angle sensor and signal conditioner.
An AMR angle sensor typically contains dual Wheatstone bridges that are offset by 45° and generate a quadrature output (sine and cosine) signals. When a simple dipole bar magnet is rotated about a mid-point between its north and south poles in a plane parallel to the surface of the chip, the chip will deliver two sinusoidal signals, one following a cos (2α) and the second following a sin (2α) function, a being the angle between the sensor axis and the direction of the field created by the bar magnet. The active area of a single sensor gives an available angle of 180 degrees (to increase that requires an increase in the number of sensors). Thus using an AMR angle sensor the direction of a magnetic field can be measured electrically by taking the bridge outputs and solving for angle α. If the sine output is VSIN, and the cosine output is VCOS, the angle α is given by the expression arctan (VSIN/VCOS)/2. By deriving the magnetization angle of the magnet, we can establish whether a specific magnet has been installed into the cap 4 (or base/reservoir/cap unit).
The drawings in
With reference to
Therefore, the graph in
In particular embodiments, such angle sensors can be employed to provide presence detection, magnet angle detection (e.g., associated with predefined characteristics), or both. For example, using an AMR angle sensor or other suitable angle sensor (as element 34), the presence of a cap 4 (or base/reservoir/cap unit) can be detected by providing a magnet of sufficient strength and direction to drive the bridge circuit output of the sensor (element 34) to within a predefined zone, when the cap 4 (or base/reservoir/cap unit) is in a proper or fully installed position within the reservoir receptacle 32 of the infusion pump device. Insufficient field strength in this arrangement would be interpreted as the cap not fully installed. It is also understood that although
Although a particular embodiment is shown in
For instance, in non-limiting embodiments in which the magnet 42 is a bar shaped magnet, the magnetic field would be inclined at an angle relative to the sides and/or ends of the bar shape to produce the desired magnetic field angle β relative to the external side ESC of the cap 4, regardless of the actual physical angle of the bar shaped magnet 42 relative to the cap 4. Traditionally, bar magnets have a field directed outward of the ends of the magnet with no angular deviation. Accordingly, in particular embodiments, the magnet can be of any shape, size and/or orientation, as discussed above and below, as long as it produces a magnetic field at the desired angle β. This can also facilitate manufacturing in embodiments where the material is placed in the cap 4 and then magnetized (after placing the material in the cap) to produce the desired magnetic field at angle β. It is noted that the magnetic field may be non-uniform or distorted, if inclined at an angle β that does not align with the ends of said bar magnet 42 (or if an asymmetrical shaped magnet is used). However, these non-uniformities or distortions need not be severe enough to prevent the sensor 34 from detecting (or correctly determining) the angle β of the magnetic field of the magnet 42 in the cap 4.
In particular embodiments, an angle β between 5° to 85°, 95° to 175°, 185° to 265° or 275° to 355° can provide sufficient ability to detect an angled magnetic field for the magnet 42 in cap 4. If a sufficiently accurate sensor can be used, then the angle β can be between 2.5° to 87.5°, 92.5° to 177.5°, 182.5° to 267.5° or 272.5° to 357.5° to provide sufficient ability to detect an angled magnetic field for the magnet 42 in cap 4. If less accurate sensors are used, the angle β can be between 10° to 80°, 100° to 170°, 180° to 260° or 285° to 350° to provide sufficient ability to detect an angled magnetic field for the magnet 42 in cap 4. The magnetic field may be at any angle within these ranges to provide a sufficient angular alignment and detection of the magnetic field by the sensor 34. Use of the angled magnetic field helps avoid interference from magnetic fields produced by magnet sources having the fields oriented in a planar direction relative to the cap 4 or that are randomly and temporarily near the infusion pump device. It is also understood that although
Although the angle β is shown in
In particular embodiments, a single magnet 42 in cap 4 is used. Further differentiation of the cap 4 may be done by selecting and using different magnets each with magnetic fields at different angles β to allow detection of different characteristics as further described below. However, in other embodiments, additional magnets (e.g., 2, 3, 4, 5 or more magnets) may be included in the cap 4, each with their own magnetic field set at a selected angle β. The magnets would then be detected, sequentially, as the cap 4 is rotated into the housing of the infusion pump device to provide a magnetic field sequence that uniquely identifies a characteristic, infusion set or other characteristic of the cap 4 (or base/reservoir/cap unit or associated infusion set).
While any suitable number of predefined zones may be employed, depending upon the sensitivity and resolution capabilities of the sensor (element 34) and associated electronics, the graph in
While resolution of 4 states is shown in
By associating one of the zones with the position and angle of the magnet, when the cap 4 (or base/reservoir/cap unit) is in a proper or fully installed position within the reservoir receptacle 32 of the infusion pump device, a detection of a sensor output in that zone can be associated with a detection of the cap 4 (or base/reservoir/cap unit) in a proper or fully installed position within the reservoir receptacle 32. Thus, for example, where zone Z1 is associated with an IN position (e.g., a fully installed position), if the output of the sensor (element 34) falls within that zone Z1, then the electronics connected or associated with the sensor 34 determines that the cap 4 (or base/reservoir/cap unit) is in an IN position (e.g., a fully installed position). However, if the output of the sensor (element 34) falls within an OUT position (e.g., in the zone labeled 57), then the electronics connected or associated with the sensor 34 determines that the cap 4 (or base/reservoir/cap unit) is in an OUT position (e.g., not fully installed position). In addition, the sensor (element 34) and electronics connected or associated therewith can be configured to resolve external magnetic field interference, by determining the external magnetic field 59, if the output of the sensor (element 34) does not fall within one of the previously-discussed zones 55 and 57.
In an example embodiment, four different caps 4 (or base/reservoir/cap units) may be provided with four distinct magnetic field orientations, respectively. Thus, a single type of magnet may be used in all four different caps 4 (or base/reservoir/cap units), but with the magnetic field angle arranged in each cap at a different one of four distinct orientations to relative to each other cap (e.g., by defining which magnet pole faces toward the top of the set connector). This can simplify manufacturing and reduce manufacturing costs by allowing the use of the same type of magnet (but arranged in different respective orientations) in multiple different types of caps 4 (or base/reservoir/cap units). Alternatively, the magnet may be magnetized with a desired field orientation, after the magnet is installed in the cap 4 (or base/reservoir/cap unit).
Accordingly, AMR angle sensors (or other angle sensors) can be employed as sensor element 34 to provide presence detection, to detect the presence of a cap 4 (or base/reservoir/cap unit), e.g., by detecting a sensor output corresponding to a predefined in position (e.g., position 55). Alternatively or in addition, the AMR angle sensors (or other angle sensors) can be employed as sensor element 34 to differentiate between different types of caps 4 (or base/reservoir/cap units or infusion sets connected thereto) by detecting and differentiating between states (e.g., positions 55, 61, 63 and 65). While the example in
For instance, an infusion pump system may be configured to provide a different sensor output for each of three potential magnetization angles (20°, 65°, and 145° with respective ranges of +/−5°), for differentiation of three different caps 4 (or three different base/reservoir/cap units or infusion sets connected thereto). It is possible to have magnets magnetized at other angles, but it may be preferable to overlap between the respective outputs for better differentiation of different infusion sets.
In particular embodiments, anisotropic materials are used for the magnet (element 42). In other embodiments, isotropic materials may be utilized, or a combination of anisotropic and isotropic materials are used for the magnet (element 42). In particular embodiments, a magnetization process can be the last step in the processing and fabrication of magnets. Magnetization can be accomplished in any suitable manner, such as, but not limited to exposing the magnet to a large external magnetic field, for example by discharging a bank of capacitors, where a pulse of high energy realigns the magnetic domains and creates a remnant magnetization (Br) in the magnet. The remnant magnetization of an isotropic material will have the same direction as the external field used to magnetize the magnet, while an anisotropic material can be magnetized only in its preferred direction. This preferred direction allows anisotropic magnets, such as sintered NdFeB, to have higher magnetic properties than isotropic materials, such as bonded NdFeB.
In further embodiments, a magnetic strip is arranged on the cap housing 5, to extend in a direction around the axis A of the cap 4, such that different locations on the magnetic strip are aligned with (or pass) the sensor (element 34) on the infusion pump device, as the cap 4 (or base/reservoir/cap unit) is inserted into the reservoir receptacle 32 at different rotational positions relative to the axis A. In such embodiments, the rotational position of the cap 4 (or base/reservoir/cap unit) can be detected, based on the particular location on the magnetic strip that is aligned with (or passes) the sensor (element 34).
In such embodiments, the sensor (element 34) or a separate dedicated sensor (not shown) may be configured to detect installation activities (such as, but not limited to, detection of a first portion of the magnetic strip, or an activation of a designated manual operator as described above). Upon detection of an installation activity, the sensor (element 34) and associated electronics are activated to poll or read continuously or intermittently, to seek a magnetic field or signature from the magnetic strip. Upon detection (or other interaction) with the magnetic strip, the sensor element (element 34) and associated electronics may be configured to read information from the magnetic strip. Such information can be employed by the electronics (e.g., electronics 60 in
In particular embodiments, the housing of the infusion pump device includes an auxiliary magnet (for example auxiliary magnet 67 in
In some embodiments, the auxiliary magnet is located on the infusion pump device 30, beneath the cap 4 (or base/reservoir/cap unit), in sufficient alignment and proximity to with the magnet on the cap 4 (or base/reservoir/cap unit) when the cap 4 (or base/reservoir/cap unit) is first inserted into the reservoir receptacle 32 to provide the repulsive action. In this case, the field of the auxiliary magnet is aligned to cause repulsion and may be angled to match with the field of the magnet in the cap 4 (or base/reservoir/cap unit). In other embodiments, the auxiliary magnet is mounted in the side of the housing 33 of the infusion pump device 30, in the region of the receptacle 32, with the field of the auxiliary magnet aligned to provide a repulsive force in a direction that tends to push the cap 4 (or base/reservoir/cap unit) outward from the reservoir receptacle 32 (linearly relative to the axis A).
In still other embodiments, the auxiliary magnet is placed adjacent or along the rotational path that the magnet in the cap 4 (or base/reservoir/cap unit) will follow as it is rotated during an installation process for installing the cap 4 (or base/reservoir/cap unit) in the reservoir receptacle 32. In further examples of such embodiments, a catch or stop surface formed by a lip and/or slot cut into the threads is provided such that the repulsion between the magnets must be overcome to move the cap 4 away from the catch or stop surface, such as out of the slot beneath the lip. In such embodiments, the magnets may be used to help avoid unthreading of the cap 4 from the housing 33 of the infusion pump device 30, unless sufficient user intervention (manual force) is applied to overcome the repulsive force.
In particular embodiments, the auxiliary magnet is magnetized after being placed in the housing to orient the field to provide the appropriate, desired repulsive force. In some embodiments, the pole is aligned at an angle to reduce the repulsive effect or to align it with the magnetic field of the magnet in the cap 4 (or base/reservoir/cap unit) to maximize the repulsive force.
In further embodiments, the auxiliary magnet is configured to attract the magnet in the cap 4 (or base/reservoir/cap unit) and help hold the magnet in the cap 4 (or base/reservoir/cap unit) in place, when the cap 4 (or base/reservoir/cap unit) is arranged in a desired position relative to the reservoir receptacle 32. In further embodiments in which magnetic attraction is employed, a non-magnetized component made from ferric material that will interact magnetically with the magnet in the cap may be employed instead of or in addition to the auxiliary magnet. For example, one or more non-magnetized, magnetically interactive element can be placed at one or more strategic locations along the rotational path of the cap 4, to help move the cap 4 to or retain the cap 4 (or base/reservoir/cap unit) in one or more predefined positions.
In some embodiments, the auxiliary magnet is formed or provided as a flat piece of material, and may come in a variety of shapes, such as but not limited to, round, square, triangular or the like. In particular embodiments, the auxiliary magnet is in the shape of a sphere that allows the material of the auxiliary magnet to be placed in any orientation desired during manufacturing. In such embodiments, the magnetic field may be induced, after assembly. In other embodiments, the auxiliary magnet is magnetized prior to being mounted to the infusion pump device 30. In particular embodiments, the auxiliary magnet has a curved shape that matches or fits the curved shape of the cap (or base/reservoir/cap unit). In particular embodiments, the auxiliary magnet is formed in a suitable size and shape to be accommodated in the housing 33 of the infusion pump device 30, and provide a magnetic field of desired size and strength.
In particular embodiments, the auxiliary magnet is placed in positions that minimize interference with a sensor 34 provided to detect the presence of the magnet 42 in the cap 4 (or base/reservoir/cap unit). For instance, the sensor may be on the opposite side of the reservoir receptacle 32 (diametrically opposite side, relative to the axis A), with respect to the location of the auxiliary magnet. In other embodiments, the sensor 34 may be arranged at any other suitable location in the housing 33 of the infusion pump device 30, where the field of the auxiliary magnet does not provide a detectable reading on the sensor 34. In other embodiments, the auxiliary magnet is placed at any suitable location, even if it is detectable by the sensor 34, and the sensor 34 is calibrated to account for the presence of the auxiliary magnet. In such embodiments, the sensor 34 may be configured to measure a difference in the magnetic field as the magnet 42 in the cap 4 (or base/reservoir/cap unit) moves into a properly installed position (or other predefined position) relative to the sensor 34.
In particular embodiments, electronics 60 associated with the sensor element(s) are configured to determine the position of the cap 4, based on the particular parameters detected by the sensor element(s). A generalized diagram of example electronics 60 associated with a sensor element 34 is shown in
In particular embodiments, the processing electronics 62 includes one or more electronic processors configured to process information received from the sensor element 34. Such electronic processors may include, but are not limited to, a programmable general purpose processor, microprocessor, programmed or hardware configured special purpose processor, or the like, that is programmed with software, hardware, firmware, combinations thereof or otherwise configured to perform operations described herein. The electronics 60 includes one or more electronic memory devices 66 that stores data, programs or other software employed by the processing electronics 62 to perform operations described herein. In particular embodiments, the electronics 60 also includes a receiver, transmitter or transceiver 68, configured to receive, transmit, or both receive and transmit information from or to a further electronic device (not shown), such as, but not limited to, a user's computer, a health care entity's computer, or the like. The electronics 60 also includes or is connected with one or more power sources (not shown) for providing electrical power to the processing electronics 62 and, as needed, to the memory 66 and transceiver 68. In particular embodiments in which the sensor element 34 requires electrical power, the above-noted power source(s) or a separate power source associated with the sensor element provides electrical power to the sensor element, for example, through the link 64 or through a separate electrical connection (not shown).
The processing electronics 62 is programmed or otherwise configured to process information received from the sensor element 34 and determine the presence or position of the cap 4 relative to the reservoir receptacle 32 of the infusion pump device 30 or other parameter of the cap 4 (or base/reservoir cap unit), based on the particular parameters detected by the sensor element(s). In one example embodiment, the processing electronics 62 is configured to detect the presence or absence of a signal from the sensor element 34, to determine the presence or absence of the cap 4 in a predefined position relative to the reservoir receptacle 32. In other embodiments, the processing electronics 62 is configured to process a signal from the sensor element 34 to determine one or more parameters associated with the position of the cap 4, such as, but not limited to, the amount of rotation or linear displacement of the cap 4 relative to the reservoir receptacle 32, a rotational position of the cap 4 around the axis A, a linear position of the cap 4 along the dimension of the axis A, an angular position of the axis A of the cap 4 relative to the axis A of the reservoir receptacle 32, or any combination thereof. In yet other embodiments, the processing electronics 62 is configured to process a signal from the sensor element 34 to determine one or more other parameters associated with a characteristic of the cap 4 (or base/reservoir/cap unit).
In particular embodiments, the electronics 60 are attached to or contained within a housing 33 of the infusion pump device 30. In other embodiments (such as embodiments in which the element 42 includes a sensor device), the electronics 60 are attached to or contained within the cap 4. In yet other embodiments, some of the components of the electronics 60 are attached to or contained within the housing 33 of the infusion pump device 30, while other components of the electronics 60 are attached to or contained within the cap 4. For example, in one embodiment, one or both of the processing electronics 62 and transceiver 68 are on or in the infusion pump device 30, while some or all of the memory 66 is on or in the cap 4.
In embodiments described above, magnet elements and sensor elements are arranged on the cap 4 and the infusion pump device 30, for detecting the position of the cap 4 relative to the infusion pump device 30 (e.g., for detecting a proper connection of the cap 4 or the base/reservoir/cap unit with the infusion pump device 30). In other embodiments, one or more magnet and sensor elements as described above are employed to detect one or more other characteristics associated with the cap 4 or the base/reservoir/cap unit, infusions set 50 (or combinations or components thereof), in addition to or as an alternative to detecting presence in or proper connection with the infusion pump device 30. In various embodiments, such other characteristics include but are not limited to characteristics of the cap 4, reservoir 1 (or its contents), infusion set 50, connection interface 40, or any combination thereof.
In those embodiments, a particular characteristic may be associated with one or more detectable parameters, where the detectable parameters include, but are not limited to one or more of: the existence of one or more magnet or sensor elements on the cap 4, the pattern or location of one or more magnet or sensor elements on the cap 4 (circumferential or linearly location relative to the dimension of the axis A), the type of magnet or sensor element on the cap 4, the polarity, magnetic field angle β or field strength of the magnet, or the like. In particular embodiments, the detectable parameters provide a detectable signature associated with the cap 4 (or the infusion pump device 30), where such signature can be unique to the cap 4 with respect to other caps, or may be non-unique with respect to signatures of other caps.
Accordingly, in particular embodiments, each different characteristic of the reservoir 1, infusion set 50 or connection interface 40, is associated with a respectively different detectable parameter (for example, location or type) of the magnet or sensor element. By reading the signature of the cap (or infusion pump device 30), the parameters that define the signature are detected. In those embodiments, the processing electronics 62 is configured to detect one or more detectable parameters of the magnet or sensor element; then determine one or more characteristics of the cap, base/reservoir/cap unit, reservoir, or infusion set based on the detectable parameter(s); and conduct one or more further predefined actions based on or using the determined characteristic(s).
In particular embodiments, the electronic circuit 60 and processing electronics 62 in
At 154 in the process 150, one or more parameters of one or more detectable elements 42 are detected by one or more sensor elements 34, for example, during or upon installation (or attempted installation) of a cap 4 or base/reservoir/cap unit in the infusion pump device 30. At 156, the processing electronics 62 compares information received from the sensor element(s) 34 with one or more pre-defined stored threshold values, or with information stored in a table (or stored in another data arrangement that associates a plurality of different detectable magnet locations or other magnet parameters with a corresponding plurality of characteristics, for example, but not limited to, a one-to-one correspondence of each different magnet location with a different characteristic, respectively). Alternatively or in addition, the processing electronics 62 may be configured to compare information received from the sensor element 34 with one or more thresholds or with information stored in a table or in another data arrangement that associates a plurality of different types of magnets (such as, but not limited to, magnets having different polarities, magnetic field angle β, field strength, or a combination of the preceding) with a corresponding plurality of characteristics (for example, but not limited to, a one-to-one correspondence of each different magnet type with a different characteristic, respectively). In those embodiments, the processing electronics 62 is configured to determine the magnet location, the magnet type or both, based on one or more comparisons of information received from the sensor element 34 with the stored information. In particular embodiments, the stored table or other data arrangement is stored in the electronic memory 66.
Examples characteristics of the reservoir 1 (or its contents) include, but are not limited to, one or more of: the type or identity of the manufacturer of the reservoir 1 or components or contents thereof, the size of the reservoir 1, the type of infusion media in the reservoir 1 (such as, but not limited to the type of insulin, other drug or other media), the concentration of the infusion media in the reservoir 1, the volume amount of infusion media in the reservoir 1, a date (such as, but not limited to a date corresponding to an expiration date, fill date or other date related to the infusion media in the reservoir 1 or the reservoir 1 itself), a location (such as, but not limited to a location corresponding to the place where the reservoir 1, the cap 4, or infusion media in the reservoir 1 (or all) was made, filled, or otherwise processed, or a location for authorized use of the reservoir 1), a lot number (or other code associated with the batch in which the reservoir 1 or infusion media was made, cleaned, filled or otherwise processed), a serial number, a unique ID, a manufacture date, user identification information (for authorized users of the reservoir 1), or other predefined characteristic.
Example characteristics relating to the infusion set 50 connected to the cap 4 include, but are not limited to one or more of: the type or manufacturer of the infusion set 50 or components thereof, the length of the tubing 52, the diameter of the tubing 52, the length of the needle or cannula 56, the diameter of the needle or cannula 56, a date (such as, but not limited to a date corresponding to an expiration date, manufacturing date or assembly date of the needle or cannula 56), a location (such as, but not limited to a location corresponding to the place where the needle or cannula 56 was made or assembled with the housing 54, or a location for authorized use of the infusion set or components thereof), a lot number (or other code associated with the batch in which the infusion set 50 or components thereof was made, cleaned or otherwise processed), a cannula type, a needle type, a lot number, a serial number, a unique ID, user identification information (for authorized users of the infusion set 50), or other predefined characteristic.
Example characteristics relating to the connection interface 40 include, but are not limited to one or more of the type or manufacturer of the connection interface 40, cap 4, base 2 or components thereof, the length, diameter or other size dimension of the cap 4, a date (such as, but not limited to a date corresponding to an expiration date, manufacturing date or assembly date of the cap 4 or base 2), a location (such as, but not limited to a location corresponding to the place where the cap 4 or base 2 was made or assembled, or a location for authorized use of the cap 4 or base 2), a lot number (or other code associated with the batch in which the cap 4 or base 2 was made, cleaned or otherwise processed), a serial number, a unique ID, user identification information (for authorized users of the infusion set 50), or other predefined characteristic.
In particular embodiments, the processing electronics 62 is further configured to conduct one or more predefined actions at 160 in the process 150, based on or using the characteristics determined at 158 in the process 150. One or more predefined actions may include, but is not limited to determining one or more operational settings for the infusion pump device 30, based on one or more of the characteristics determined from detected parameters of the signals from the sensor element 34. In further examples of such embodiments, the processing electronics 62 also provides signals to the drive device or other components of the infusion pump device 30, to control operations of the drive device (or other components) based on one or more characteristics determined from the detected parameters. In one example, based at least in part on the detected parameter, the processing electronics 62 determines and sets operational settings for one or more of: pumping rate (amount of fluid pumped per unit time), pumping time period (amount of time of pumping), pumping power (amount of fluid pressure), priming (filling) the infusion set tubing 52, priming (filling) the infusion set needle or cannula 56, detecting an occlusion in the fluid path from the reservoir 1 to the infusion set needle or cannula 56, handling an occlusion (pumping time, pressure, or program for dislodging, compensating for, or otherwise handling an occlusion).
Thus, in one example, the locations or types (or both) of the magnets correspond to one or more characteristics relating to the particular type or size of infusion set 50 connected to the cap 4, where the detected characteristics are employed by the processing electronics 62 to determine a pumping rate or pumping time period (or both) that is sufficient to prime (fill) the infusion set tubing 52, or the needle or cannula 56 (or both). In another example, the locations or types (or both) of the magnets correspond to one or more characteristics relating to the pumping time, pumping pressure or pumping program that is sufficient to dislodge or compensate for an occlusion in that particular type or size of infusion set 50.
In further embodiments, the processing electronics 62 is configured to perform (at 160 in the process 150) one or more other predefined actions based on or using the characteristic(s) determined at 158. Such other predefined actions may include, but are not limited to providing a control signal to deactivate or inhibit activation of a pump drive device in the infusion pump device 30, when the signal received from the sensor member 34 represents that the cap 4 or the base/reservoir/cap unit is not fully or properly received within the reservoir receptacle 32 of the infusion pump device 30. Alternatively or in addition, the processing electronics 62 is configured to provide a control signal to activate or allow activation of a pump drive device in the infusion pump device 30, when the signal received from the sensor member 34 represents that the cap 4 or the base/reservoir/cap unit is fully or properly received within the reservoir receptacle 32 of the infusion pump device 30.
Alternatively or in addition, the processing electronics 62 is configured to perform (at 160 in the process 150) yet one or more other predefined actions, such as, but not limited to providing an alarm signal, to activate an alarm indicator, when the signal received from the sensor member 34 represents that the cap 4 or the base/reservoir/cap unit is not fully or properly received within the reservoir receptacle 32 of the infusion pump device 30. In particular embodiments, the processing electronics 62 is configured to provide such an alarm or control signal (or both), only when the processing electronics 62 detects that the cap 4 or base/reservoir/cap unit is not fully and properly received within the reservoir receptacle 32, after having previously detected that the cap 4 or base/reservoir/cap unit is fully and properly received within the reservoir receptacle 32 (for example, indicating that a previously properly received cap 4 has since been moved or otherwise dislodged out of that position within the reservoir receptacle 32). In such embodiments, the processing electronics 62 may include (or be connected for communication with) a display device for displaying an alarm condition.
The alarm display device may include any suitable indicator such as, but is not limited to one or more of: a light emitting device, LED, LCD or other visual display device; a sound emitting device, speaker, buzzer or other audio display device; a vibrator, heater, or other tactile display device, or the like. In particular embodiments, the alarm display device is attached to or contained in the infusion pump device 30. In other embodiments, the alarm display device is attached to or contained in the cap 4. In yet other embodiments, the alarm display device is in an external device (such as, but not limited to a computer, smart phone, pager, or other electronic communication device) connected for communication with the electronics 60, for example, through a wired or wireless communication link.
In further embodiments, the processing electronics 62 is configured to perform (at 160 in process 150) other actions, such as, but not limited to recording data representing detected states or conditions (or characteristics) of one or more of the cap 4, base/reservoir/cap unit, and infusion pump device 30. In particular embodiments, the processing electronics 62 records such data in the electronic memory 66, in a form that can be retrieved by the processing electronics 62 or other processing electronics (not shown) at a time or date after recording. In such embodiments, the processing electronics 62 or other processing electronics may employ such data to generate reports, tables or other data structures for assisting with the evaluation of the recorded data. In yet further embodiments, the processing electronics 62 is configured to send such recorded data, reports, tables or other data structures to a predefined entity, for example, but not limited to, by transmitting the information through the transceiver 68. For example, in particular embodiments, the electronics 60 is configured to transmit recorded information to a remote facility at predefined or periodic intervals or upon receipt of such information from a sensor element.
In yet further embodiments, at 160 in process 150, the processing electronics 62 is further configured to determine operational settings for the infusion pump device 30, record data or perform other predefined tasks, based on one or more signals obtained from one or more additional sensors (not shown), from receiver or transceiver 68, from user input (through a user interface, not shown, connected to the electronics 60), or a combination thereof. In particular embodiments, the receiver or transceiver 68 includes a geographic positioning system receiver (such as, but not limited to a GPS or other satellite positioning system receiver) that receives or determines the geographic location of the infusion pump device 30, cap 4, or base/reservoir/cap unit. Alternatively or in addition, the processing electronics 62 is further configured to determine operational settings for the infusion pump device 30, record data or perform other predefined tasks as described below, based on one or more signals obtained from one or more electronic clocks or other timing devices (not shown) connected with the electronics 60.
In examples of such embodiments, the processing electronics 62 is configured to detect, record (or both) the geographic location of the infusion pump device 30, cap 4, or base/reservoir/cap unit, or the time or date (or any combination of location, time and date), when a particular parameter or event is detected. In one example, the particular parameter or event is one or more of: the receipt of a signal from the sensor element 34 indicating that the cap 4 or base/reservoir/cap unit has been properly and fully received within the reservoir receptacle 32; the receipt of a signal from the sensor element 34 indicating that the cap 4 or base/reservoir/cap unit has not been properly and fully received or has been moved or dislodged from its proper position within the reservoir receptacle 32; the receipt of a signal from the sensor element 34 indicating that the cap 4 or base/reservoir/cap unit has been (or not been) at one or more predefined positions within the reservoir receptacle 32, the receipt of a signal from the sensor element 34 indicating that a particular type of cap 4, infusion set 50 or reservoir 1 has been received in the reservoir receptacle 32; the movement or presence of the infusion pump device 30, cap 4, or base/reservoir/cap unit in a predefined geographic location or region; and the like. In such embodiments, the processing electronics 62 may record data representing the location or time (or both) at which any one or more predefined events occurs, such as, but not limited to the events described above. Alternatively or in addition, the processing electronics 62 may record data representing one or more detected parameters (or associated characteristics) as described above and locations or times (or both) at which any one or more of such parameters (or associated characteristics) are detected.
In further embodiments, the electronics 60 includes one or more further sensors (not shown) for detecting external or environmental magnetic fields. In such embodiments, the processing electronics 62 is configured to analyze information from the one or more sensors and provide a warning/alarm or provide control signals for adjusting operation of the infusion pump device 30 (or both), based on the detected external or environmental magnetic field. For example, the processing electronics 62 may adjust detection or processing parameters to compensate for the external or environmental magnetic fields, to minimize any effect of the external or environmental magnetic field on the detection of the magnet element(s) 34. Alternatively or in addition, the cap 4 is configured to minimize influence by external or environmental magnetic fields, where such cap configurations may include, but are not limited to, magnetic field shielding material.
In particular embodiments described above, the processing electronics 62 is configured to determine operational settings for the infusion pump device 30, provide alarm or control signals, record data or perform other predefined tasks base, at least in part, on detection of one or more detectable element(s) 12 (or information provided by a detectable parameter of the detectable elements(s) 42). In certain embodiments, the processing electronics 62 is configured to authenticate a base/reservoir/cap unit, cap 4 or reservoir 1, based on one or more of the parameters detected from the signals received from the sensor element 34. For example, the processing electronics 62 determines whether or not the detected parameters correspond to predefined characteristics associated with an authentic base/reservoir/cap unit, cap 4 or reservoir 1. In such embodiments, an authentic base/reservoir/cap unit, cap 4 or reservoir 1 may be for example, one that is authorized for use with the infusion pump device 30 by the manufacturer of at least one of the infusion pump device the base/reservoir/cap unit, cap 4, or reservoir 1. Alternatively or in addition, an authentic base/reservoir/cap unit, cap 4 or reservoir 1 may be one that is authorized by another predefined entity, such as, but not limited to, a government or industry standards or regulatory entity, or other predefined entity.
In certain embodiments, the processing electronics 62 coupled to the transceiver 68 may access, e.g., via a wired or wireless connection, directly or via another device(s), a database (e.g., on the Internet) to verify the authenticity of one or more of the base, reservoir, and/or cap using the serial number (unique ID, etc.) obtained from the base, reservoir, and/or cap, respectively, to confirm that such unit is authentic and genuine. Medical devices are stringently tested and heavily regulated, and use of unauthorized components may jeopardize proper treatment of the patient. Many of the components, such as the base/reservoir/cap, infusion set, etc., are single-use components, and the processing electronics 62 on the infusion pump device 30, e.g., may keep track of the serial numbers such that the patient is prohibited from re-using, purposefully or accidentally, a component where its safe useful life has already been depleted. Moreover, along with verifying authenticity, lot numbers, e.g., for the respective base, reservoir, and/or cap also may be checked against the database to ensure that no recalls are outstanding, and the user is alerted by (or even prohibited by) the infusion pump device 30 (or any other suitable device) to not use a particular base, reservoir, and/or cap and return it to the manufacturer if there is a recall underway, further enhancing the safety of the patient by using the most currently available information.
In particular embodiments, a detected geographic location, time or date (or any combination thereof) is included in the determination of authenticity. For example, the processing electronics 62 may be configured to determine that a base/reservoir/cap unit, cap 4 or reservoir 1 installed in the infusion pump device 30 is authentic, when the parameters detected from the signals received from the sensor element 34 correspond to characteristics that have been predefined (for example, pre-stored in memory 66) as an authentic base/reservoir/cap unit, cap or reservoir for use at a particular time, date or geographic location (or a combination thereof). In such embodiments, the memory 66 may store a table or other suitable data configuration that associates combinations of detectable magnet parameters and one or more dates, times and geographic locations (or any combination thereof) with an authentication determination.
Table 1 shows an example of an association of detectable parameters (labeled Parameters 1-N in Table 1) with different geographic locations (labeled Regions A-C).
In Table 1, a base/reservoir/cap unit, cap 4 or reservoir 1 that has a detectable magnet parameter corresponding to Parameter 1 is authentic, when the electronics 60 determines that the infusion pump device 30 is in Region A (but not when the electronics 60 determines that the infusion pump device 30 is in any other region). Also in Table 1, a detectable magnet parameter corresponding to Parameter 2 would indicate authenticity, when the electronics 60 determines that the infusion pump device 30 is in Region A or in Region B (but not when the electronics 60 determines that the infusion pump device 30 is in any other region). Similarly, in Table 1, a detectable magnet parameter corresponding to Parameter 3 would indicate authenticity, when the electronics 60 determines that the infusion pump device 30 is in Region C (but not when the electronics 60 determines that the infusion pump device 30 is in any other region). Further in Table 1, a detectable magnet parameter corresponding to Parameter N would indicate authenticity, when the electronics 60 determines that the infusion pump device 30 is in any of Regions A, B or C.
Table 2 shows a similar example, but of an association of detectable magnet parameters (labeled Parameters 1-N in Table 1) with different geographic locations (labeled Regions A-C) and dates (shown in years).
In Table 2, a base/reservoir/cap unit, cap 4 or reservoir 1 that has a detectable magnet parameter corresponding to Parameter 1 is authentic, when the electronics 60 determines that the infusion pump device 30 is in Region A and also determines that the current date is within the years 2010 and 2020 (but not when the electronics 60 determines that the infusion pump device 30 is in any other region or that the date is outside of that date range). Also in Table 2, a detectable magnet parameter corresponding to Parameter 2 would indicate authenticity, when the electronics 60 determines that the infusion pump device 30 is in Region A or in Region B and also determines that the current date is within the years 2010 and 2015 (but not when the electronics 60 determines that the infusion pump device 30 is in any other region or that the date is outside of that date range). Similarly, in Table 2, a detectable magnet parameter corresponding to Parameter 3 would indicate authenticity, when the electronics 60 determines that the infusion pump device 30 is in Region C and also determines that the current date is within the years 2012 and 2020 (but not when the electronics 60 determines that the infusion pump device 30 is in any other region or that the date is outside of that date range). Further in Table 2, a detectable magnet parameter corresponding to Parameter N has no date restriction (as indicated by the X in Table 2) and would indicate authenticity, when the electronics 60 determines that the infusion pump device 30 is in any of Regions A, B or C.
While Tables 1 and 2 refer to Parameters 1-N (where N may be any suitable integer), other embodiments may employ a single detectable parameter or set of detectable parameters (e.g., Characteristic 1). Also, while Table's 1 and 2 refer to Regions 1, 2, 3 and N, other embodiments may employ any suitable number of predefined regions, including a single region. While the dates in Table 2 are represented in years, other embodiments may employ dates corresponding to days, weeks, months, or other suitable segments. In yet further embodiments, instead of or in addition to dates, a table (or other data configuration employed by the processing electronics 62) includes time data corresponding to separate ranges of time (similar to the separate date ranges shown in Table 2).
In particular embodiments, the electronics 60 is configured to allow operation of the infusion pump device 30 when the processing electronics 62 determines that the base/reservoir/cap unit, cap 4 or reservoir 1 is authentic, and to not allow infusion operation of the infusion pump device 30 when the processing electronics 62 does not determine that the base/reservoir/cap unit, cap 4 or reservoir 1 is authentic. For example, the processing electronics 62 may be configured to provide a control signal to the drive device to stop operation of the drive device, or inhibit sending a drive or power signal to the drive device, or perform another predefined action to not allow dispensing of infusion media from the infusion pump device 30. In other embodiments, the electronics 60 is configured to allow an infusion operation (or a limited or other predefined infusion operation) of the infusion pump device 30, but to also performs one or more further predefined actions when the processing electronics 62 does not determine that the base/reservoir/cap unit, cap 4 or reservoir 1 is authentic. Such other predefined actions include, but are not limited to, one or more of providing a readable message on a display device of the infusion pump device 30, providing an alarm signal for operating an alarm indicator on the infusion pump device 30, and recording data associated with one or more of the infusion operation, the detected characteristic(s), time, date, and geographic location, or any combination thereof.
In further embodiments, instead of associating one or more detectable parameters (e.g., Parameters 1-N in Tables 1 and 2) with geographic region, date, time or other predefined parameter, the processing electronics 62 is configured to employ magnetic detection by the sensor(s) 34 to determine presence or proper alignment, installation and connection of the base/reservoir/cap unit, cap 4 or reservoir 1 in the infusion pump device 30. Then, once proper alignment, installation or connection of the base/reservoir/cap unit, cap 4 or reservoir 1 in the infusion pump device 30 is detected, the processing electronics controls operation of the infusion pump device 30 based on whether or not the infusion pump device 30 is determined to be within a predefined (pre-authorized) region, or is being operated within a predefined (pre-authorized) time or date. In such embodiments, a table, list or other data configuration of predefined (pre-authorized) regions, times, dates or combinations thereof is stored in memory associated with the electronics 60, such as electronic memory 66. The processing electronics 62 may be configured, in further embodiments, to determine the geographic location, time, date (or any combination thereof) at predefined times, periodically, randomly or the like, once the infusion pump device 30 has started operation.
In any of the above or further embodiments, the processing electronics 62 may be configured to record information regarding the infusion pump device 30, base/reservoir/cap unit, cap 4 or reservoir 1, or the usage and operation thereof. In particular embodiments, the processing electronics 62 is configured to record, for example, in the memory 66 data corresponding to one or more of identification information associated with the base/reservoir/cap unit, cap 4 or reservoir 1, dates or times of connection, operation or disconnection of the base/reservoir/cap unit, cap 4 or reservoir 1 to the infusion pump device 30, dates or times of alarm conditions, dates or times of operation of the infusion pump device 30, detected parameters or conditions associated with detected parameters. In further embodiments, the geographic location of the infusion pump device at the time of any of the above recording events is recorded as an alternative to or in addition to recording of date or time information. In such embodiments, recordings of usage of an infusion pump device 30, base/reservoir/cap unit, cap 4 or reservoir 1 outside of a predefined geographic region, date or time (for example, beyond a predefined expiration date) may be made. In further embodiments, as an alternative to or in addition to recording the event, the processing electronics 62 is configured to provide one or more of an alarm indication and a display of a warning message on a display device in the infusion pump device, upon the detection of usage of an infusion pump device 30, base/reservoir/cap unit, cap 4 or reservoir 1 outside of a predefined geographic region, date or time.
In further embodiments, one or more wireless or wired communication devices is provided on the infusion pump device 30 (or other delivery device) and is configured and controlled to transmit volume information relating to the volume of infusion fluid remaining in or dispensed from the reservoir 1 (or other information corresponding to detected parameters or associated characteristics) for display on another electronic device separate from or located remote from the infusion pump device 30. In particular embodiments, the wireless communication device(s) are configured to connect for communication on a communication network (such as, but not limited to the Internet), with one or more pre-defined network connected devices. Such one or more pre-defined network connected devices may be located at remote geographic locations relative to the infusion pump device 30 (or other delivery device). In particular embodiments, such network connected devices include a server configured to receive information from the infusion pump device 30 (or other delivery device) or from another network connected device (such as a cradle, user computer, or the like) that communicates with the infusion pump device 30 (or other delivery device). Such information may include, but is not limited to information corresponding to one or more detected parameters or one or more associated characteristics, or other information regarding the reservoir 1, cap 4, base/reservoir/cap unit or infusion set as described above.
In such embodiments, the network connected server may be associated with an entity that records information, supplies associated products such as refills or replacement parts, provides medical treatment or medical insurance to the user or the like. In one example, the network connected server is associated with the Carelink™ system of Medtronic Inc. In other embodiments, the network connected server is one or more other servers and associated entities. Accordingly, such information may be employed by the server (or associated entity) to determine whether or not (or when) to send refills, new or replacement reservoirs, caps, infusion set needle housings, infusion set tubing, or other components of the cap 4, base/reservoir/cap unit, or infusion set. In further embodiments, such information may be provided to the user's doctor or other medical treatment entity associated with the user (for tracking, diagnosing, adjusting treatment plans or other suitable uses). Thus, in such embodiments, refills or replacement components may be sent to users, automatically (without requiring the user to place an order), and usage information can be provided to the user's healthcare provider, insurance provider or other suitable entities, automatically.
In further embodiments, the network connected server is configured to provide (and the infusion pump device 30 or other delivery device is configured to receive) information through the above-noted network communication connection or other network connection. Such information may include, but is not limited to, instructions or recommendations for replacing or refilling a reservoir 1, cap 4, base/reservoir/cap unit or infusion set, messages or notices from healthcare providers, insurance carriers or manufacturers, recall notices or the like. In particular embodiments, electronics (such as electronics 60) in the infusion pump device 30 (or other delivery device) is configured to perform one or more predefined actions (as discussed above) in response to receipt of a predefined instruction, notice or message.
In embodiments described above, one of the elements 34 and 42 includes at least one magnet, while the other of the elements 34 and 42 includes at least one sensor. In other embodiments, one of the elements 34 and 42 includes both a magnet and a sensor arranged so that they do not directly interact, while the other of the elements 34 and 42 includes a metal or other material that is magnetizable or conducts magnetic flux when in alignment or proximity (or both) with the magnet (when the base/reservoir/cap unit is fully and properly received in the reservoir receptacle 32 of the infusion pump device 30), but does not become magnetized by the magnet or conduct magnetic flux when out of alignment or proximity with the magnet. In those embodiments, the sensor is configured and arranged in sufficient alignment and proximity to the metal or other material to detect the state of the metal or other material being magnetized when the base/reservoir/cap unit is fully or properly received in the reservoir receptacle 32 of the infusion pump device 30.
b. Inductive Detection
In particular embodiments as described above, one (or all) of the cap 4, reservoir 1, and the infusion pump device 30 is provided with at least one sensor, and the other (or all) of the cap 4, reservoir 1, and the infusion pump device 30 is provided with at least one detectable feature that is detected by the sensor when the cap 4 is properly coupled with the infusion pump device 30. Embodiments as described above include one or more magnetic detectable features and magnet detection sensors. Other embodiments described herein include one or more detectable features that are detected by other sensing configurations (including RF, optical, mechanical or electrical contact sensing configurations). In other embodiments, the one or more detectable features 42 includes an inductively detectable member (or target) that can be detected by an inductive sensor, and the one or more sensor elements 34 includes an inductive sensor.
Thus, in one example, element 42 represents one or more inductively detectable members (or targets) carried by the cap 4, while element 34 represents one or more inductive sensor elements located on the infusion pump device, in or adjacent the reservoir receptacle 32. In further embodiments, the relative locations of the inductive sensor element(s) and inductively detectable member(s) (target(s)) is reversed such that the inductively detectable member(s) 42 (or target(s)) are located in and carried by the infusion pump device 30, while the inductive sensor(s) 34 are carried by the cap 4. In yet further embodiments, the inductively detectable member(s) (or target(s)) and the inductive sensor element(s) are each located in and carried by the infusion pump device 30.
Arrangements and configurations of magnetic sensors and magnetic detectable features (as the sensors and detectable features 34 and 42) described above and shown in
Inductive sensors may be configured as non-contact proximity sensors used to detect the presence of metallic or other electrically conductive objects. Thus, in particular embodiments, one or more inductively detectable members (or targets) includes one or more electrically conductive materials attached to, embedded in or otherwise provided on the cap 4. Such electrically conductive members (or targets) may be made of any suitable electrically conductive material such as, but not limited to, copper, gold, silver, nickel, a ferrous metal, other conductive metals or other electrically conductive materials. In particular embodiments, the electrically conductive members (or targets) include electrically conductive ink or other electrically conductive material that is printed or otherwise applied to the cap 4. In further embodiments, the electrically conductive members (or targets) include electrically conductive polymer materials molded and/or formed as desired. The inductively detectable members (or targets) may be passive (not powered by a separate power source).
In addition, one or more sensors are provided on the infusion pump device 30, where each sensor includes (or is connected with) one or more electrically conducive coil. Each coil is attached to, embedded in or otherwise provided on the infusion pump device 30, in the region of the reservoir receptacle 32. Each electrically conductive coil may be configured with any suitable electrically conductive material such as, but not limited to, copper, gold, silver, nickel, a ferrous metal, conductive inks or other conductive metals or electrically conductive materials, formed in a coil configuration suitable for inductive interaction with a target.
In particular embodiments, a single electrically conductive coil is provided on the infusion pump device 30 and a single electrically conductive member (or target) for inductive interaction with the coil is provided on the cap 4 (or base/reservoir/cap unit). In other embodiments, a plurality of electrically conductive coils are provided on the infusion pump device 30 (and/or a plurality of electrically conductive members or targets are provided on the cap 4) in locations that allow the electrically conductive member(s) (target(s)) to inductively interact with the coil(s) to provide detectable signals for detection of axial or rotational (angular) motion or position (or both) of the cap 4 relative to the reservoir receptacle 32. The detectable signals provided by the interaction of the electrically conductive member(s) (or target(s)) and the coil(s) are dependent, in part, on various parameters such as the distance between the electrically conductive member and the coil, and the size, shape and material of the electrically conductive member (or target). Accordingly, those parameters can be selected to provide a detectable signature that can indicate the presence of a cap 4 (or base/reservoir/cap unit) in a fully installed position within reservoir receptacle, as well as other information associated with the cap 4 (or the base/reservoir/cap unit) or the infusion set connected to the cap 4.
For example, in the embodiment of
In the embodiment in
Also in the embodiment in
In further embodiments, the upper end (reservoir-receiving end) of the reservoir receptacle 32 includes an upper ring member 94 that is attached to the lower portion of the reservoir receptacle 32, where the coil 93 is attached to, embedded within or otherwise provided on the ring member 94. This allows the coil 93 and ring member 94 to be made separately from the rest of the infusion pump device 30 and then assembled with the infusion pump device 30 during or after manufacture of the infusion pump device 30. In such embodiments, the ring member 94 may be made of any suitably rigid material, such as but not limited to plastic, metal, ceramic, composite material or combinations thereof. The ring member 94 is attached to the rest of the reservoir receptacle 32 by any suitable attachment mechanism including, but not limited to, welding, glue, resin or other adhesive material, screw threads, friction fit, or the like.
The ring member 94 is arranged at a location on the reservoir receptacle 32 to allow the coil 93 to inductively interact with the target 91 on the cap 4, when (or as) the cap is received within the reservoir receptacle. For example, the coil 93 may be disposed on the ring member 94 in a location where the coil 93 will be adjacent and in sufficient proximity to the target 91, when (or as) the cap is received within the reservoir receptacle 32 such that the target 91 is in sufficient proximity to the coil 93 to causes (by induction) a detectable change in a current flowing in the coil 93 (and in the circuit 95 in
In one example embodiment, a sensor 34 is connected in an electronic detection circuit with the coil 93 (for example, in the circuit 95 in
The target 91 is attached to the cap 4 at a location and position such that the target 91 moves in the direction of arrow 98 relative to the coil 93, when the cap 4 (or base/reservoir/cap unit) moves into the reservoir receptacle 32 of the infusion pump device 30. As a result, the target 91 moves to a position adjacent the coil 93 (or to a different position adjacent the coil 93 relative to a starting position), when the cap 4 (or base/reservoir/cap unit) moves into the reservoir receptacle 32 of the infusion pump device 30. In the drawing of
The movement and change of position of the target 91 adjacent and relative to the coil 93 produces a detectable effect on the current signal in the circuit 95, at least partially depend upon (a function of) the distance between the target 91 and the coil 93, and the size, shape and composition of the target 91. The position of the target 91 relative to the coil 93 after the target 91 has been moved in the direction of arrow 96 produces a detectably different signal in the circuit 95 relative to the signal when the target 91 is not adjacent to the coil 93 (e.g., prior to installation of the cap 4 or after removal of the cap 4 from the reservoir receptacle 32).
In particular embodiments, the sensor 34 (or processing electronics 62) is configured to detect the inductance (or other parameter) associated with the tank circuit in circuit 95 without the target 91 present (e.g., before installation of a cap 4 or base/reservoir/cap unit). This provides the sensor 34 (or processing electronics 62) with a base or calibration value associated with the target 91 not being present. Then, after the cap 4 (or base/reservoir/cap unit) is installed in the reservoir receptacle, the sensor 34 (and processing electronics 62) are configured to detect the changed inductance (or other parameter) associated with the tank circuit in circuit 95 when the target 91 is present (relative to the base or calibration value). When the change in the inductance (or other parameter) is detected, the processing electronics 62 determines (in response to that detection) that a cap 4 (or base/reservoir/cap unit) has been installed.
In an embodiment described above, the target 91 is provided in the form of a ring or band around the cap 4. In other embodiments, the target 91 can be formed as a partial ring or band, or may have another shape. For example, in the embodiment in
Similarly, when the cap 4 (or base/reservoir/cap unit) is moved in a direction out of the reservoir receptacle 32 (opposite to the direction of arrow 96), the second end 91b (larger dimension end) of the target 91 will be in front of the first end 91a (smaller dimension end) of the target 91 in the direction of motion, causing a detectable effect on eddy currents different from the effect of moving in the direction of arrow 96. Accordingly, the movement of the cap 4 (or base/reservoir/cap unit) results in a time varying signal (or detectable signature) in the circuit 95 that is partially dependent on the direction of motion of (into or out of the reservoir receptacle) and the size and shape of the target 91.
In particular embodiments, the infusion pump device 30 is operable with any of a plurality of different caps 4 (or base/reservoir/cap units), where each cap (or each base/reservoir/cap unit) has one or more targets 91 that produce a different detectable signal in the circuit 95 (and, thus, has a detectably different signature) relative to each other cap 4 of the plurality of different caps 4. For example, caps 4 (or base/reservoir/cap units or associated infusion sets) from different manufacturers, for different reservoirs, for different reservoir contents, or having other differing features (relative to other caps 4 or base/reservoir cap units or associated infusion sets) can have a correspondingly different target 91 (e.g., a different shape, size, material or combination thereof), to produce a different detectable signal (or target signature) relative to such other caps 4 or base/reservoir cap units or associated infusion sets. In particular embodiments, processing electronics (such as processing electronics 62) are configured to determine information about a cap 4 (or base/reservoir/cap unit), based on the detectable signal (or signature) produced when the cap 4 (or base/reservoir/cap unit) is moved in the direction of arrow 96 (or opposite direction) as the cap 4 is installed or removed from the reservoir receptacle, or when the cap 4 is in an installed position.
For example, processing electronics (such as processing electronics 62 in
The stored data may include, but is not limited to, data corresponding to a plurality of different models, sizes, types or styles of caps 4 (or base/reservoir/cap units, reservoirs or associated infusion sets), manufacturers of the caps 4 (or base/reservoir/cap units, reservoirs or associated infusion sets), the type of infusion media in the reservoir 1 (such as, but not limited to the type of insulin, other drug or other media), the concentration of the infusion media in the reservoir 1, the volume amount of infusion media in the reservoir 1, a date (such as, but not limited to a date corresponding to an expiration date, fill date or other date related to the infusion media in the reservoir 1 or the reservoir 1 itself), a location (such as, but not limited to a location corresponding to the place where the reservoir 1, the cap 4, or infusion media in the reservoir 1 (or all) was made, filled, or otherwise processed, or a location for authorized use of the reservoir 1), a lot number (or other code associated with the batch in which the reservoir 1 or infusion media was made, cleaned, filled or otherwise processed), a serial number, a unique ID, a manufacture date, user identification information (for authorized users of the reservoir 1), or other predefined data or characteristic associated with the caps (or base/reservoir/cap units, reservoirs or associated infusion sets). In this manner, the processing electronics can determine various characteristics of or information about the cap 4 (or base/reservoir/cap unit, reservoir 1 or associated infusion set) from the detected signal (or signature) produced as the cap 4 (or base/reservoir/cap unit) is installed or removed from the infusion pump device 30, or when the cap 4 (or base/reservoir/cap unit) is in an installed position.
While the embodiment in
The shape, size and material of the target 91 and the number and pattern of plural targets 91 can affect the eddy currents and, thus, the detectable signal (or signature) produced when the target 91 is moved or located adjacent the coil 93. Accordingly, one or more of the shape, size and material of the target 91 and the number and pattern of plural targets 91 can be selected to provide a particular unique or non-unique detectable signal (or signature), as described above.
In particular embodiments, the cap 4 (or base/reservoir/cap unit) may include a plurality of targets 91, or the infusion pump device 30 may include a plurality of coils 93 (or both), arranged in different positions along the axis A or around the axis A (or both). In such embodiments, the position of the cap 4 (or base/reservoir/cap unit) relative to the length dimension of the axis A or relative to a circumference around the axis A (or both) can be detected, to detect the linear position or the rotational position (or both), of the cap 4 (or base/reservoir/cap unit) relative to the axis A (and, thus, relative to the reservoir receptacle 32 of the infusion pump device 30). For example, rotational position can be detected with a plurality of targets 91 and/or a plurality of coils 93, in a manner similar to the plurality of sensors and plurality of detectable members 34 and 42 in
In certain embodiments described above, the target(s) 91 are provided on the cap 4 (or base/reservoir/cap unit), while the coil(s) 93 are provided on the infusion pump device 30. In other embodiments, the target(s) 91 and the coil(s) 93 are, both, provided on the infusion pump device 30. In example embodiments, one or more targets 91 are supported on the infusion pump device 30 with a corresponding one or more coils 93, where each target 91 is held by a support structure that moves the target 91 in a predefined direction upon and in response to the installation of the cap 4 (or base/reservoir/cap unit) in the reservoir receptacle 32 of the infusion pump device 30.
Representative examples of mechanically moveable support structures for moving a target 91 in response to the installation of a cap 4 (or base/reservoir/cap unit) in a reservoir receptacle 32 are described with reference to
In
The mechanically moveable member carries one or more targets 91 (one shown in
In the embodiment of
The channel 72 may be formed within the structure of the housing 33 of the infusion pump device 30 or within a further structure located within the housing 33. A first end of the channel 72 is open into the reservoir receptacle 32. A second end of the channel 2 is open into another portion of the interior of the housing 33 of the infusion pump device 30. In the illustrated embodiment, the channel 72 is linear along a longitudinal dimension (horizontal dimension in
The moveable member 70 has a first end 74 (the end on the right side of the moveable member 70 in
More specifically, the engagement portion 80 of the cap 4 (or other component of the base/reservoir/cap unit) has a contact surface that comes into contact with and engages a surface of the second end 78 of the moveable member 70, as the cap 4 (or the base/reservoir/cap unit) is manually inserted and moved into a proper and fully inserted position within the reservoir receptacle 32 of the infusion pump device 30. As the cap 4 (or the base/reservoir/cap unit) is manually moved toward the proper and fully inserted position within the reservoir receptacle 32, the engagement portion 80 engages the second end 78 of the moveable member 70. Then, further movement of the cap 4 (or the base/reservoir/cap unit) toward the a proper and fully inserted position causes the engagement portion 80 to push the second end 78 of the moveable member 70 and move the moveable member 70 in the direction of arrow 69 from a first position (shown in
The movement of the moveable member 70 from the first position (
In particular embodiments, the engagement portion 80 on the cap 4 (or the base/reservoir/cap unit) has a feature (a protrusion, bump, extension, depression or the like) having the contact surface that engages the second end 78 of the moveable member 70, when the cap 4 (or the base/reservoir/cap unit) is in a fully and properly inserted position within the reservoir receptacle 32. In such embodiments, the protrusion (or other feature) may be shaped and located at a particular position on the cap 4 (or the base/reservoir/cap unit) to engage (or fully engage) the second end 78 of the moveable member 70 sufficient to move the moveable member 70 to the second position, only when the cap 4 (or the base/reservoir/cap unit) is fully and properly inserted within the reservoir receptacle 32. In such embodiments, the target 91, circuit 95 (including coil 93) and processing electronics 62 are configured to detect movement of the moveable member 70 to the second position, or to detect the presence of the moveable member 70 at the second position (or both), for example, to determine that the cap 4 (or the base/reservoir/cap unit) is fully and properly installed. In further embodiments, the target 91, circuit 95 (including coil 93) and processing electronics 62 are configured to detect movement of the moveable member 70 to one or more positions other than the second position, or to detect the presence of the moveable member 70 at such one or more other positions (or both), for example, to determine that the cap 4 (or the base/reservoir/cap unit) is not fully or properly installed in the reservoir receptacle 32.
In further embodiments, the protrusion (or other feature) of the engagement portion 80 has a predetermined size that results in a movement of the moveable member 70 in the direction of arrow 69 by a predetermined amount (corresponding to the predetermined size), when the cap (or the base/reservoir/cap unit) is fully and properly installed in the reservoir receptacle 32. Thus, engagement portion features of different sizes will result in different amounts of movement of the moveable member 70 (and of the target 91), when the cap (or the base/reservoir/cap unit) is installed in the reservoir receptacle 32. In particular embodiments, the size of the engagement portion feature is selected to provide a particular unique or non-unique detectable signal (or target signature), where parameters of that target signature are employed by processing electronics 62 (of
In such further embodiments, multiple different predetermined sizes of the engagement portion features (such as multiple different lengths of the protrusion) may be associated (on a one-to-one basis or other pre-defined association) with predefined data (e.g., stored in memory 66) corresponding different predefined characteristics of the cap 4 (or the base/reservoir/cap unit or associated infusion set), as described above with respect to
The stored associations are used by processing electronics (such as processing electronics 62) to determine one or more characteristics of a cap (or base/reservoir/cap unit), reservoir 1 (or its contents), infusion set 50, connection interface 40, or any combination thereof, as described with respect to 156 and 158 in process 150 of
In particular embodiments, the second end 78 of the moveable member 70 extends a small distance into the reservoir receptacle 32, when the moveable member 70 is in the first position (
In particular embodiments, the second end 78 of the moveable member 70 extends into the channel of the reservoir receptacle 32 by a distance sufficient to contact an outer surface of the cap 4 (or the base/reservoir/cap unit) and ride along that outer surface (allow that outer surface to slide over the second end 78 of the moveable member 70) without moving to the second position and, thus, without moving the target 91 relative to the coil 93, as the cap 4 (or the base/reservoir/cap unit) is manually inserted into the reservoir receptacle 32 and rotated toward a proper position. When the cap 4 (or base/reservoir/cap unit) is properly and fully received (inserted and rotated into proper position) in the reservoir receptacle 32, the engagement portion 80 on the cap 4 (or the base/reservoir/cap unit) comes into engagement with the second end 78 of the moveable member 70 and imparts a sufficient force onto the moveable member 70 to move the target 91 in the direction of arrow 69 to the second position.
In particular embodiments, the second end 78 of the moveable member 70 (or the entire moveable member 70) is made of a material that is sufficiently compliant, flexible and resilient to be compressed at least at the second end 78 by the engagement portion 80, when the second end 78 of the moveable member 70 is contacted by the engagement portion 80. For example, the material may be sufficiently compliant and flexible to accommodate for different cap 4 sizes or for manufacturing tolerances (or both). Thus, the second end 78 of the moveable member 70 may extend into the reservoir receptacle 32 by a distance sufficient to contact a cap 4 having any size outer diameter (within a predefined range), by compressing sufficiently to accommodate larger diameters within that range.
In particular embodiments in which the moveable member 70 shifts toward the switch when moving from the first position to the second position, the moveable member 70 includes or is engaged by a bias member 82 that imparts a bias force on the moveable member 70 to bias the moveable member 70 toward the first position (
In such embodiments, the moveable member 70 includes a protrusion, extension or other structure that provides a stop surface for stopping further motion of the moveable member 70 in the direction of the first position, when the moveable member 70 reaches the first position. In the embodiment of
In particular embodiments, one or more seals or other features are provided for inhibiting the passage of moisture, liquid or other fluid through the channel 72, for example, in the event that moisture, liquid or other fluid enters the reservoir receptacle 32. Thus, the passage of moisture, liquid or other fluid from the reservoir receptacle 32 to other areas within the infusion pump housing 33 can be inhibited, for example, in the event that the infusion pump device 30 is exposed to moisture, liquid or other fluid (such as, for example, rain, pool water, shower water, or the like).
In the embodiment of
The drawings in
In
The mechanical linkage 97 supports the target 91 for movement from a first position (as shown in
However, as the cap 4 (or base/reservoir/cap unit) is received in the reservoir receptacle 32 and moved toward a fully installed position, an engagement portion 80′ on the cap 4 (or base/reservoir/cap unit) engages and contacts the target 91 and moves the target 91 toward the second position. When the cap 4 (or base/reservoir/cap unit) is fully installed, the engagement portion 80′ remains engaged with the target 91 and holds the target 91 in the second position (as shown in
In particular embodiments, the engagement portion 80′ is a surface of a rib or bottom edge of a portion of the cap 4 and extends fully around the circumference of the cap 4 (around the axis A, when the cap 4 is arranged within the reservoir receptacle 32). In other embodiments, the engagement portion 80′ includes one or more bumps, ramps or other projecting portions of the cap 4, arranged at one or more selected locations, spaced around the circumference of the cap 4, to align with the target 91 when (or only when) the cap 4 is received within the reservoir receptacle 32 in a proper rotational position (rotational position about the circumference of the axis A) relative to the reservoir receptacle 32. Alternatively or in addition, the engagement portion 80′ may be arranged at any one of a plurality of locations along the linear dimension of the axis A to move the target 91 by an amount (along the linear dimension of axis A) dependent upon the location (in the linear dimension) of the engagement portion 80′. Thus, a cap 4 with an engagement portion 80′ as shown in
The coil 93 is supported within the infusion pump device 30, at a location to interact in a detectable manner with the target 91 as described above, when the target 91 moves to or is located at the second position (
In the embodiments in
In certain embodiments, the coil 93 is attached to a surface of a wall defining a portion of the reservoir receptacle 32, for example, on an inside surface facing the interior of the reservoir receptacle, on an opposite facing surface of the wall or embedded within the wall. In embodiments in which the coil 93 is on the opposite-facing surface or embedded within a wall of the reservoir receptacle 32, the wall is made of a plastic or other suitable material that allows inductive coupling of the target 91 and the coil 93, through the wall, at least when the target 91 is at the second position (
The linkage structure 97 may be any suitable structure that supports the target 91 for linear movement along the direction of the axis A. Such linkage structures may include, but are not limited to, rails, guide surfaces, bias springs, or combinations thereof. One example of a linkage structure 97 is shown in
In the embodiments of
In embodiments in which two or more (a plurality of) mechanically movable members or linkage-supported, moveable targets are arranged at predefined locations around or along the axis A of the reservoir receptacle 32, a corresponding two or more coils 93 are arranged to detect the position of the cap 4 relative to the infusion pump device 30 (e.g., for detecting a proper connection of the cap 4 or the base/reservoir/cap unit with the infusion pump device 30).
In other embodiments, in addition to or as an alternative to detecting proper connection with the infusion pump device 30, one or more mechanically movable members or linkage-supported, moveable targets are employed to detect one or more other characteristics associated with the cap 4 or the base/reservoir/cap unit or associated infusion set (or components thereof) as discussed above with respect to the process 150 in
In such further embodiments, multiple different engagement portion locations (along the length dimension of the axis A or around the circumference of the axis A, or both) may be parameters associated (on a one-to-one basis or other pre-defined association) with corresponding different predefined characteristics of the cap 4 (or the base/reservoir/cap unit or associated infusion set), for use in a process 150 as described above with respect to
The stored associations are used by processing electronics (such as processing electronics 62) to compare and determine one or more characteristics of a cap (or base/reservoir/cap unit), reservoir 1 (or its contents), infusion set 50, connection interface 40, or any combination thereof, as described with respect to 156 and 158 in process 150 of
Therefore, a particular characteristic may be associated with the movement of one or more mechanically movable members or linkage-supported, moveable conductive members, or the location or pattern of locations of the particular mechanically movable members or linkage-supported, moveable conductive members that are moved to the second position by the cap 4. In particular embodiments, each different predefined characteristic of the reservoir 1, infusion set 50 or connection interface 40, is associated (for example, on a one-to-one basis or other predefined association) with a respectively different one or more predefined mechanically movable member or linkage-supported, moveable conductive member. In those embodiments, the processing electronics 62 is configured to determine a characteristic of the reservoir 1, infusion set 50 or connection interface 40 from the detectable signals caused by movement of one or more mechanically movable members or linkage-supported, moveable conductive members.
For example, the processing electronics 62 may be configured to compare information received from one or more sensors 34 (in circuits 95 associated with coils 93) with information stored in a table or in another suitable data arrangement. The table or other data arrangement is stored in the electronic memory 66. The table or other data arrangement associates signals produced by movement of different predefined mechanically movable members or linkage-supported, moveable conductive members with a corresponding plurality of predefined characteristics, as described herein with respect to the magnetic, RF, optical and mechanical detection embodiments and incorporated herein by reference.
In particular embodiments, based on one or more of the detectable signals produced by movement of the one or more mechanically movable members or linkage-supported, moveable conductive members, the processing electronics 62 is further configured to determine corresponding characteristics and, based on those characteristics, do one or more predefined actions such as, but not limited to: determine operational settings for the infusion pump device 30, provide signals to the drive device or other components of the infusion pump device 30, provide one or more alarm signals, and record data representing detected states or conditions of one or more of the cap 4, base/reservoir/cap unit, and infusion pump device 30, as described above with regard to magnetic detection, RF detection, optical and mechanical embodiments.
In further embodiments, one or more wireless or wired communication devices is provided on the infusion pump device 30 (or other delivery device) and is configured and controlled to transmit volume information relating to the volume of infusion fluid remaining in or dispensed from the reservoir 1 (or other information corresponding to detected parameters of the one or more targets 91 or associated characteristics) for display on another electronic device separate from or located remote from the infusion pump device 30. In particular embodiments, the wireless communication device(s) are configured to connect for communication on a communication network (such as, but not limited to the Internet), with one or more pre-defined network connected devices. Such one or more pre-defined network connected devices may be located at remote geographic locations relative to the infusion pump device 30 (or other delivery device). In particular embodiments, such network connected devices include a server configured to receive information from the infusion pump device 30 (or other delivery device) or from another network connected device (such as a cradle, user computer, or the like) that communicates with the infusion pump device 30 (or other delivery device). Such information may include, but is not limited to information corresponding to one or more detected parameters or one or more associated characteristics, or other information regarding the reservoir 1, cap 4, base/reservoir/cap unit or infusion set as described above.
In such embodiments, the network connected server may be associated with an entity that records information, supplies associated products such as refills or replacement parts, provides medical treatment or medical insurance to the user or the like. In one example, the network connected server is associated with the Carelink™ system of Medtronic Inc. In other embodiments, the network connected server is one or more other servers and associated entities. Accordingly, such information may be employed by the server (or associated entity) to determine whether or not (or when) to send refills, new or replacement reservoirs, caps, infusion set needle housings, infusion set tubing, or other components of the cap 4, base/reservoir/cap unit, or infusion set. In further embodiments, such information may be provided to the user's doctor or other medical treatment entity associated with the user (for tracking, diagnosing, adjusting treatment plans or other suitable uses). Thus, in such embodiments, refills or replacement components may be sent to users, automatically (without requiring the user to place an order), and usage information can be provided to the user's healthcare provider, insurance provider or other suitable entities, automatically.
In further embodiments, the network connected server is configured to provide (and the infusion pump device 30 or other delivery device is configured to receive) information through the above-noted network communication connection or other network connection. Such information may include, but is not limited to, instructions or recommendations for replacing or refilling a reservoir 1, cap 4, base/reservoir/cap unit or infusion set, messages or notices from healthcare providers, insurance carriers or manufacturers, recall notices or the like. In particular embodiments, electronics (such as electronics 60) in the infusion pump device 30 (or other delivery device) is configured to perform one or more predefined actions (as discussed above) in response to receipt of a predefined instruction, notice or message.
In embodiments described above, the target(s) 91 is(are) provided on the cap 4 (or base/reservoir/cap unit) or in the infusion pump device 30. In other embodiments as described with reference to
In particular embodiments, the processing electronics is configured to detect the linear position of the plunger head 1a and determine whether or not the plunger head 1a is in a filled position (corresponding to a filled or un-used reservoir 1), or whether or not the plunger head 1a is in the last position from the previous use of the infusion pump device 30. In such embodiments, the processing electronics may be configured to perform a predefined action in response to a determination that the plunger head is not in a filled position or is not in its last position (which may indicate that a used or re-used reservoir has been installed in the infusion pump device). Such predefined action may include, but is not limited to, inhibiting infusion media delivery operation of the infusion pump device 30, determining particular operational settings for the infusion pump device 30, providing an alarm or control signals, recording data, providing authentication operations, or performing other predefined tasks.
Similar to embodiments discussed above, the target 91 on the plunger head 1a may have a predefined shape, size, material, or combination thereof, to provide a detectable signal (or signature) that is based at least in part on the shape, size, material or combination thereof. Also similar to embodiments discussed above, a plurality of different reservoirs 1 may include a corresponding plurality of different targets 91 (with different respective shapes, sizes, materials, or combinations thereof), to provide a corresponding plurality of different detectable signals (signatures).
In such embodiments, processing electronics and associated memory (such as processing electronics 62 and memory 66) are configured to compare parameters of detected signals (signatures) with pre-stored signal parameter information, and associate predefined data with the detected signals (signatures) as described above. The predefined data may include, but is not limited to, data corresponding to a plurality of different models, sizes, types or styles of caps 4 (or base/reservoir/cap units, reservoirs or associated infusion sets), manufacturers of the caps 4 (or base/reservoir/cap units, reservoirs or associated infusion sets), the type of infusion media in the reservoir 1 (such as, but not limited to the type of insulin, other drug or other media), the concentration of the infusion media in the reservoir 1, the volume amount of infusion media in the reservoir 1, a date (such as, but not limited to a date corresponding to an expiration date, fill date or other date related to the infusion media in the reservoir 1 or the reservoir 1 itself), a location (such as, but not limited to a location corresponding to the place where the reservoir 1, the cap 4, or infusion media in the reservoir 1 (or all) was made, filled, or otherwise processed, or a location for authorized use of the reservoir 1), a lot number (or other code associated with the batch in which the reservoir 1 or infusion media was made, cleaned, filled or otherwise processed), a serial number, a unique ID, a manufacture date, user identification information (for authorized users of the reservoir 1), or other predefined data or characteristic associated with the caps (or base/reservoir/cap units, reservoirs or associated infusion sets). In this manner, the processing electronics can determine various information about the reservoir 1 or cap 4 (or base/reservoir/cap unit or associated infusion set) from the detected signal (or signature).
While the above description of
In any of the inductive sensing embodiments described herein one or more (or each) coil 93 may be provided with a backing or shield for inhibiting electromagnetic interference from other components of the infusion pump device 30 or external sources. For example, in particular embodiments, a shunt backing of ferrite (or other suitable) material is arranged adjacent one side of the coil, to inhibit passage of electromagnetic fields to or from that side of the coil. In further embodiments, the material and shape of the backing or shield is configured to direct a magnetic field of the coil 93 toward the target 91. The backing or shield can be made in any suitable form including, but not limited to a plate-like member provided on one side (a back side) of the coil 93, a cage or enclosure containing the coil 93 and having an opening or other magnetic field guide directing the magnetic field toward the target 91. In embodiments in which the coil 93 is arranged on or in a wall of the infusion pump device 30, the backing or shield may be arranged on the same wall or on an opposite side of the wall, adjacent the location of the coil 93.
In inductive detection embodiments described with reference to
Inductive detection configurations described herein can provide various advantages. For example, like magnet detection embodiments described herein, inductive detection can provide a reliable, contactless system that is relatively insensitive to certain environmental conductions, such as dust, dirt, moisture, or the like. Furthermore, particular inductive detection systems do not require magnets. Furthermore, in inductive detection systems the coil 93 may be arranged in proximity to an expected location of the target, but can be separated from the rest of the circuit 95. Accordingly, the circuit 95 and electronics 60 may be arranged near the coil 93 or at other locations on the infusion pump device 30, remote from the coil 93.
In particular embodiments as described above, one (or all) of the cap 4, reservoir 1, and the infusion pump device 30 is provided with at least one sensor element, and the other (or both) of the cap 4 and the infusion pump device 30 is provided with at least one detectable feature that is detected by the sensor element(s) when the cap 4 is properly coupled with the infusion pump device 30. Certain embodiments as described above include one or more magnetic detectable features and magnet detection sensors. In other embodiments described above, each of the one or more detectable features 42 includes an inductive device or structure that can be detected by an inductive sensor, and each sensor element 34 includes an inductive sensor. In yet other embodiments, the one or more detectable features 42 include a combination of magnetic detectable devices and inductive devices, while the one or more sensor elements 34 include a combination of one or more magnetic detection sensors and one or more inductive sensors.
c. RF Detection
In particular embodiments as described above, one (or all) of the cap 4, reservoir 1, and the infusion pump device 30 is provided with at least one sensor, and the other (or all) of the cap 4, reservoir 1, and the infusion pump device 30 is provided with at least one detectable feature that is detected by the sensor when the cap 4 is properly coupled with the infusion pump device 30. Embodiments as described above include one or more magnetic detectable features and magnet detection sensors, or one or more inductively detectable features and inductive sensors (or both).
Other embodiments described herein (e.g., in sections, below) include one or more detectable features that are detected by optical, mechanical or electrical contact sensing configurations. In yet other embodiments, the one or more detectable features 42 includes a radio frequency (RF) detectable device or structure that can be detected by an RF sensor, and the one or more sensor elements 34 includes an RF sensor. Thus, in one example, element 42 represents one or more RFID tags carried by the cap 4, while element 34 represents one or more RF sensor elements in or adjacent the reservoir receptacle 32 of the infusion pump device 30.
Accordingly, arrangements and configurations of magnetic sensors and magnetic detectable features (as the sensors and detectable features 34 and 42) described above and shown in
In particular embodiments, an RF detectable feature 42 includes a radio frequency identification data (RFID) tag or any other suitable device that provides an RF signal that is detectable by an RF sensor. The RF detectable feature may be a passive device that does not employ a battery power source. Examples of passive RF detectable devices include inductive devices that are powered and read by RF sensor readers, through electromagnetic induction. In other embodiments, the RF detectable feature is an active device that includes or is connected to a local power source, such as, but not limited to a battery, solar cell, or other local source of energy. In particular embodiments, the RF detectable device includes data storage electronics that stores information readable by a suitable RF sensor. Various types of RFID tags are made by a variety of companies including, but not limited to Impinj and NXP Semiconductors.
In particular embodiments, the RF detectable feature is configured as an RFID tag device that has an antenna coil and an electronic circuit electrically connected to the coil. The electronic circuit may be provided on a circuit board, in an electronic circuit chip (such as, but not limited to a microchip) or in or on another suitable support structure. In certain embodiments, the electronic circuit is a passive circuit that has no power source battery but, instead, receives power through the antenna coil, from inductive coupling with a sensor. In other embodiments, the electronic circuit in the RF detectable feature includes or is connected with a battery power source (or other suitable active power source). In an example embodiment, the RF detectable feature is configured as a stick-on label having an adhesive-backed substrate sheet or base, with an RFID tag supported on the substrate sheet or base (or adhered to, embedded in or inlayed into the substrate sheet or base). In such embodiments, the RF detectable feature can be provided in the form of a smart label that can be adhered directly to a cap 4, reservoir 1, or other component of a base/reservoir/cap unit, or to the infusion pump device housing, or any combination thereof.
The RF detectable feature is configured to communicate RF signals at one or more predefined frequencies or within one or more predefined frequency bands. In particular embodiments, the predefined frequencies or bands are within a UHF band, for example, but not limited to 860-960 MHz. Other embodiments may employ other suitable frequencies or bands. In embodiments in which a plurality of RF detectable devices are employed in the system, each RF detectable devices may be configured to operate in a different predefined frequency or band with respect to each other of the RF detectable device in the system.
Also in particular embodiments, the electronic circuit included in the RF detectable feature is configured to store information and communicate stored information in an RF signal. The RF signal may be communicated through inductive coupling with a sensor (for example, in a passive device embodiment) or by transmission with an active transmitter circuit included in the RF detectable feature (for example, in active device embodiments). Information stored by the RF detectable feature may include, but is not limited to, one or more of: serial number or other identification information, a lot number, a unique ID number/code, EPC or other code, indicia or encoded information representing one or more predefined characteristics of the reservoir, reservoir contents, cap 4 or other component of the base/reservoir/cap unit, the infusion pump device, any of the characteristics of the reservoir 1, infusion set 50, and connection interface 40 discussed in the above Magnetic detection section of the present specification, or the like.
In a passive device embodiment example, the RF detectable feature is an RF detectable device configured to receive an RF signal from a sensor device (when the RF detectable device and the sensor device are in sufficient proximity or alignment, or both), and is powered up by the received signal to communicate stored information back to the sensor device, for example, via a back scatter signal. In an active device embodiment example, the RF detectable device is configured to actively transmit stored information to a sensor device (when the RF detectable device and the sensor device are in sufficient proximity or alignment, or both). For example, the active RF detectable device may be configured to transmit stored information at predefined intervals (or periodic or random intervals) of time. In other embodiments, an active RF detectable device may be configured to receive a request signal from a sensor device when the RF detectable device and the sensor device are in sufficient proximity or alignment (or both), where RF detectable device responds to the request signal by transmitting the stored information.
The RF sensor device(s) may include, but are not limited to, an RF reader that includes electronics having an RF transceiver and modem controlled by a microprocessor (or other suitable processor) and electrically connected with an antenna. In embodiments that employ passive RF detectable devices, the RF sensor device includes an inductive loop antenna and electronic circuitry configured to generate an AC magnetic field that induces a voltage across an antenna of a passive RF detectable device, when the RF detectable device and the sensor device are in sufficient proximity or alignment, or both. In such embodiments, the RF sensor electronics are configured to receive information from the RF detectable device, via a back scattered signal (as described above). In other embodiments, the RF sensor device(s) include other suitable devices that provide a detectable response to the presence or alignment (or both) of an RF detectable device.
In particular embodiments, the RF sensor(s) are configured (or are connected with electronics configured) to detect at least one of: (a) the presence of an RF signal; (b) one or more parameters of an RF signal; and (c) data encoded in the RF signal. Such parameters include, but are not limited to the Received Signal Strength Indication (RSSI) or other RF signal strength, amplitude, phase, or other defined parameter of an RF signal provided (actively or passively). In particular embodiments, such parameters are compared with one or more pre-defined threshold values to detect, for example, whether or not the parameter exceeds the threshold value(s). Data encoded in the RF signal includes, but is not limited to, data representing or associated with one or more characteristics of the cap 4, reservoir 1, base 2, infusion set 50 or the base/reservoir/cap unit, or any combination thereof.
In particular embodiments, one or more RF detectable features 42 and or RF sensors 34, or both, are arranged such that the RF sensor detects the position of the cap 4 relative to the infusion pump device 30 (e.g., for detecting a proper connection of the cap 4 or the base/reservoir/cap unit with the infusion pump device 30). For example, one or more RF shields, directional antennas, wave guides or other configurations may be included in the cap 4, reservoir 1, or infusion pump device 30 (or all), to direct RF signals to or from RF detectable devices or sensors (or both). In particular embodiments, such RF shields, directional antennas, wave guides or other configurations are arranged such that the RF sensor is able to detect the RF detectable device (or one or more predefined parameters, data or both of a signal from the RF detectable device), when the RF sensor and the RF detectable device are in a predefined alignment, proximity (or both), such as when the cap 4 or the base/reservoir/cap unit is properly connected with the infusion pump device 30. In further embodiments, such RF shields, directional antennas, wave guides or other configurations are arranged to inhibit detection of the RF detectable device (or predefined parameter, data, or both), when the cap or the base/reservoir/cap unit is not properly connected with the infusion pump device 30.
In other embodiments, one or more RF detectable features and sensor elements, are employed to detect one or more other characteristics associated with the cap 4 or the base/reservoir/cap unit or components thereof, in addition to or as an alternative to detecting proper connection with the infusion pump device 30. In various embodiments, such other characteristics include but are not limited to characteristics of the reservoir 1 (or its contents), infusion set 50, connection interface 40, or any combination thereof, as described above with respect to magnetic detection.
In those embodiments, each different characteristic may be associated with one or more detectable RF parameters such as, but not limited to: the existence of one or more RF detectable features or sensor elements on the cap 4, the location or pattern of locations of one or more RF detectable features or sensor elements on the cap 4 (circumferential or linearly location relative to the dimension of the axis A), the type of RF detectable feature(s) or sensor devices(s) on the cap 4, the type or content of data stored by the RF detectable feature(s), the polarity, direction or orientation of the signal emitted by the RF detectable feature(s), or the like. In particular embodiments, each different predefined characteristic of the reservoir 1, infusion set 50 or connection interface 40, is associated (for example, on a one-to-one basis) with a respectively different predefined detectable location, pattern of locations, type of RF detectable feature or sensor element, data type or content (code or other indicia) or other detectable parameter in the RF signal read from the RF detectable feature. In those embodiments, the processing electronics 62 is configured to determine a characteristic of the reservoir 1, infusion set 50 or connection interface 40 from the signals received from the sensor element 34 or 42.
For example, the processing electronics 62 may be configured to compare information received from one or more RF sensor elements 34 with one or more predefined, stored threshold, where each threshold is associated with a characteristic as described above. In other embodiments, the processing electronics 62 is configured to compare information received from one or more RF sensor elements 34 with values or information stored in a table or in another suitable data arrangement. The table or other data arrangement associates a plurality of different predefined RF detectable device locations (or a plurality of different predefined patterns of RF detectable device locations on the cap) with a corresponding plurality of predefined characteristics. Alternatively or in addition, the table or other data arrangement associates a plurality of different codes or other data receivable from RF detectable devices with a corresponding plurality of characteristics. The associations may be, for example, but not limited to, a one-to-one correspondence of each different RF detectable device location, code or other data with a different characteristic, respectively. The table or other data arrangement is stored in the electronic memory 66. Examples characteristics for RF detection embodiments include characteristics of the reservoir 1 (or its contents), the infusion set 50 connected to the cap 4, the connection interface 40, as described above with regard to magnetic detection and incorporated herein by reference.
In particular embodiments, based on one or more of the parameters detected from the signals received from the RF sensor, the processing electronics 62 is further configured to determine corresponding characteristics and, based on those parameters or characteristics, do one or more of: determine operational settings for the infusion pump device 30, provide signals to the drive device or other components of the infusion pump device 30, provide one or more alarm signals, and record data representing detected states or conditions of one or more of the cap 4, base/reservoir/cap unit, and infusion pump device 30, as described above with regard to magnetic detection.
As described above, embodiments of the RF detectable feature 42 include electronics for storing data that is readable by an RF sensor element 34. In particular embodiments, such data storage electronics are configured to be writable (to receive data and store received data). In such embodiments, an external writing device, such as, but not limited to, a computer or processing device with a suitable data transmitter, is configured to write data onto the RF detectable feature. In particular embodiments, the RF detectable feature 42 includes multiple electronic storage devices or one or more segmented storage devices, where one or more of the storage devices or segments are writable and can receive and record data written thereto, as described above, while one or more other storage devices or segments store readable data (for example, recorded by a manufacturer or other authorized entity) but are not re-writable. Thus, for example, an RF detectable feature 42 may include a segmented RFID tag having a first segment that stores information readable by electronics in the infusion pump device 30, and a second segment that stores additional information that is written onto the tag by a healthcare provider or other authorized entity, or by electronics in the infusion pump device 30.
In such embodiments, for example, a doctor or other health care provider may write and record information onto the RF detectable feature. Information written onto the RF detectable feature in that manner may include, but is not limited to, data corresponding to the characteristics described above, instructions to be read by electronics in the infusion pump device 30 for controlling an operation of the infusion pump device 30 or for displaying information on a display of the infusions pump device 30, data corresponding to the user of the infusion pump device 30 or a treatment associated with that user, or other data or combinations thereof.
In further embodiments, the infusion pump device 30 includes one or more data writing devices for writing data onto an RF detectable feature 42, when the cap 4 or the base/reservoir/cap unit is properly connected with the infusion pump device 30. In such embodiments, electronics 60 is configured to selectively write data (or read and write data) on the RF detectable feature 42, in accordance with predefined, programmed instructions. In one example embodiment, the electronics 60 includes or is connected with a sensor (not shown) for detecting one or more parameters corresponding to the volume of infusion media dispensed by the infusion pump device 30, and is configured to track the amount of infusion media dispensed from a reservoir 1 from a defined time upon or after the reservoir 1 is installed in the reservoir receptacle 32, and write to record on the RF detectable feature 42 that tracked amount or an associated value representing a volume of infusion media dispensed or remaining in the reservoir 1.
Alternatively or in addition, in further embodiments the infusion pump device 30 is configured to write to record other information on the RF detectable feature 42, such as, but not limited to one or more of a date, time or geographic location at which the base/reservoir/cap unit or components thereof were installed in the infusion pump device 30. In further embodiments, such other information includes one or more of operational information or alarm conditions detected by the electronics 60 during operation of the infusion pump device.
In further embodiments, such other information includes one or more of a date, time or geographic location at which infusion media was dispensed, an occlusion in the infusion set 50 was detected, an alarm condition was detected, or another predefined condition was detected or predefined pump operation occurred. Thus, just as the processing electronics 62 described above may be configured to detect, record (or both) the geographic location of the infusion pump device 30, cap 4, or base/reservoir/cap unit, or the time (or all) when a particular characteristic or event is detected, the processing electronics 62 may also or alternatively be configured to record such information onto the RF detectable feature 42.
In embodiments in which date or time is recorded, the electronics 60 include or are associated with an appropriate clock or other source of date or time information. In embodiments in which geographic location is recorded, the electronics 60 includes or is associated with suitable location detection electronics such as, but not limited to satellite position system electronics (for example, but not limited to a GPS system receiver), configured to detect a geographic location of the infusion pump device 30.
In particular embodiments employing RF detection, the processing electronics 62 is configured to determine operational settings for the infusion pump device 30, provide alarm or control signals, record data, provide authentication operations, or perform other predefined tasks base, at least in part, on detection of (or information provided by a detectable characteristic of) the RF detectable feature 42 in a manner similar to the manner described above with respect to magnet elements(s) as the detectable feature 42. Accordingly, the above description of example configurations and operations of processing electronics 62 applies to the RF detectable feature 42. Thus, Parameters 1-N described above may be characteristics of the RF detectable feature 42, such as, but are not limited to the RSSI or other RF signal strength, amplitude, phase, data encoded in the RF signal or other defined parameter of an RF signal.
Furthermore, in embodiments in which the presence or position (such as rotary position) of the cap 4 or the base/reservoir/cap unit relative to the infusion pump device 30 is detected, an RF detection configuration can provide a relatively precise position detection. For example, in further examples of embodiments described above with respect to
In particular embodiments, RF detectable devices and RF sensor devices can provide a relatively precise detection of proper or improper alignment or proximity (or both), of the base/reservoir/cap unit relative to the reservoir receptacle 32, as described above with respect to
RF detectable features and RF sensors can be configured, according to embodiments of the present invention, to provide a relatively precise position detection. Example configurations are described herein. However, other embodiments employ other suitable configurations that provide levels of precision appropriate for their context of use.
In particular embodiments, presence or position detection (or both) is accomplished by configuring one or more RF sensor devices 34 (or electronics connected to such sensor device(s)) to detect the signal strength of one or more RF detectable feature 42. The signal strength detection may include a detection of the RSSI signal level. In particular embodiments, the electronics 60 connected to the sensor(s) are configured to compare a signal strength (such as RSSI signal level) detected by one or more sensor(s) with one or more predefined threshold values. Such predefined threshold values may be set by a manufacturer or other entity associated with the infusion device pump 30, reservoir 1, cap 4 or other components described above, and stored in memory included in or accessible by the electronics 60, such as memory 66. For example, in particular embodiments, the predefined threshold values include values that correspond to signal strength levels that are received by one or more RF sensor device(s) 34, when one or more RF detectable features 42 are in a proper position or alignment (or both) with the one or more RF sensor devices 34 (corresponding to when the base/reservoir/cap unit is properly or fully received (or both) in the infusion pump device 30).
In further particular embodiments, a single RF sensor device (for example, represented by element 34 in
In further embodiments, one or more RF detectable features or the one or more RF sensors (or both) include an antenna configuration to enhance detection capabilities or precision of the detection (for example, location or position detection precision). Thus, with reference to embodiments described above with respect to
In an example embodiment, one or more RF sensor devices or the RF detectable features (or both) 34 or 42 described above include or are connected with a plurality of antennas, where each antenna is located at a different position around the circumference or length (or both) of the direction of the axis A. In embodiments in which one or more RF sensor devices are on the infusion pump device 30, a plurality of antennas may be mounted in the infusion pump device 30 as part of or connected to the RF sensor device(s), and are arranged in a special array around or along (or both) the direction of the axis A. In embodiments in which the one or more RF detectable features are on the cap 4 or other component of the base/reservoir/cap unit, a plurality of antennas may be mounted in the cap 4 or other component of the base/reservoir/cap unit as part of or connected to the RF detectable feature(s), and are arranged in a spatial array around or along (or both) the direction of the axis A.
For example, each antenna of (or connected to) a sensor device 34 is configured and oriented to communicate signals with (receive signals from or transmit signals to, or both) one or more antennas of (or connected to) an RF detectable feature 42, when that RF detectable feature 42 is in a predefined position relative to the antenna (such as, but not limited to, a position directly adjacent the antenna), but does not sufficiently communicate signals with the RF detectable feature that is not in the predefined position. In particular embodiments, one or more antennas are arranged in locations that correspond to the position of one or more of the RF detectable features when the base/reservoir cap unit is fully or properly received within the infusion pump device 30.
Accordingly, electronics 60 connected with the RF sensor device 34 may be configured to determine whether or not the base/reservoir/cap unit is fully received within or in a proper position relative to the infusion pump device 30 (or determine the position of the cap 4 relative to the infusion pump device 30), based on signals received by one or more antenna. In particular embodiments, the electronics 60 is configured to employ information regarding signals received from a plurality of antennas arranged around or along (or both) the direction of the axis A, to determine the position of the base/reservoir/cap unit (or cap 4) relative to the infusion pump device 30. In further embodiments, the electronics 60 is configured to employ such information to determine the direction or speed (or both) of rotation or other movement of the base/reservoir/cap unit (or cap 4) relative to the infusion pump device 30, for example, to evaluate whether the base/reservoir/cap unit (or cap 4) is being moved in the proper or desired direction, to record information corresponding to the direction or speed (or both) of movement, or a combination thereof.
In further embodiments, one or more antennas of sensor device(s) 34 are configured to receive signals from one or more antennas of the RF detectable features 42, where the signal strength (such as, but not limited to RSSI value) or other characteristic of the signal varies as the relative position of the RF detectable device on the cap varies. In such embodiments, the electronics 60 is configured to employ signal strength or other detected signal characteristic from one or a plurality of antennas to determine the position of the base/reservoir/cap unit (or cap 4) relative to the infusion pump device 30. For example, the signal strength (RSSI or other signal strength value) of a received signal can be stronger as the relative positions of the antennas of the sensor device and detectable device become closer (e.g., as the cap 4 or base/reservoir/cap unit is moved toward a fully inserted position within the reservoir receptacle 32). Thus, the electronics 60 may be configured to analyze detected signal strength from one or more sensor devices or one or more antennas (or both), such as, but not limited to comparing detected signal strength with one or more preset thresholds corresponding to predefined relative positions of the base/reservoir/cap unit (or cap 4) and the infusion pump device 30. Other embodiments may employ other algorithms or routines for determining relative positions from received signals.
Particular embodiments employ a plurality of antennas in a spaced arrangement as described above, and electronics 60 configured to analyze RSSI values or other signal strength values for signals received by or transmitted by (or both) the plurality antennas, to provide position detection or pattern recognition (to identify a detected pattern of locations of the antennas from a plurality of predefined possible patterns), for example, with a high precision relative to a single antenna arrangement. In those or other embodiments that employ a plurality of antennas, the antennas may be configured in a phased array configuration or other suitable configuration for providing a predefined detectable signal directions or patterns.
In particular examples of embodiments that employ a plurality of antennas or a plurality of sensor devices 34 (or both a plurality of antennas and a plurality of sensor devices), the electronics 60 is configured to scan the array of sensors to selectively activate each sensor or read a signal from each sensor (or both), in serial sequence or other predefined sequence or a pseudo random sequence. For example, in particular embodiments, a plurality of antennas is arranged (on the cap 4, the infusion pump device 30, or both) at predefined locations around or along (or both) the circumference of the axis A, where each antenna is configured to provide (or is connected with mutually different detectable devices or sensor devices configured to provide) a different detectable signal relative to each other antenna. By configuring each antenna to provide a relatively narrow beam (narrow angle of transmission or reception beam or both), such as, but not limited to a beam angle of about 1 to 3 degrees, and scanning the antennas, the electronics 60 may be configured to provide a relatively precise detection of the rotational or linear position of the cap 4 (or the base/reservoir/cap unit) relative to the reservoir receptacle 32 of the infusion pump device 30. In other embodiments, other suitable beam angles may be employed, including beam angles of less than 1 degree or beam angles greater than 3 degrees.
In those or other example embodiments that employ a plurality of antennas or a plurality of sensor devices 34 (or both a plurality of antennas and a plurality of sensor devices), the electronics 60 is configured to provide maximum ratio combining of received RF signals, for example, to improve signal-to-noise ratio. In such embodiments, the signals received from a plurality of antennas in an array are combined, but the ratio of the combination is adjusted by the electronics 60, depending upon the strength of the signal. For example, the electronics 60 may weight or increase the contribution of signals from antennas in the array that are receiving stronger signals than antennas in the array that are receiving weaker signals (as determined by the electronics 60).
In particular embodiments, antennas may be calibrated (for example by the factory that manufactures the cap, reservoir, base or infusion pump device or by another authorized entity) for improved sensitivity and accuracy. In further embodiments, detection sensitivity and precision is enhanced by employing any combination of two or more features described above including, but not limited to antenna beam forming configurations, antenna arrays of multiple antennas, different detectable parameters for different antennas in an array, other transmission diversity for different antennas in an array, maximum ratio combining, factory calibration, or the like.
In examples of embodiments described above that employ one or more antennas in or connected with one or more sensor devices 34, the sensor antenna(s) may be mounted in the infusion pump device 30, for example, adjacent the reservoir receptacle 32. In particular embodiments, the sensor antenna(s) is (are) located within the housing structure of the infusion pump device 30, for example, by being embedded in or molded within the plastic material that forms the housing structure or the structure of the reservoir receptacle 32 (or both). In other embodiments, the antenna(s) are attached to the housing or reservoir receptacle structure of the infusion pump device 30 by an adhesive or connective hardware (or both).
The size, position and/or orientation of an antenna can greatly influence the strength of the signal and the detection of various features in an RF detectable feature, including but not limited to, an RFID. With this in mind, in certain embodiments, it can be beneficial to provide as large an antenna area as possible and/or augment an antenna in a cap 4. In particular embodiments, the RFID can include an antenna and/or electrical contacts that engage with an antenna formed on the reservoir. In further embodiments, the antenna is formed along the side of the reservoir. In these embodiments, the antenna placed on the reservoir is oriented and/or provides increased size at a location more ideally suited to engage and work with the corresponding electronics on the infusion pump device. In particular embodiments, more than one antenna may be formed on the side of the reservoir. For instance, this may be useful to assure alignment of the antenna after connection of the cap 4 to the reservoir and insertion and locking of the reservoir (or base/reservoir/cap unit) in the infusion pump device housing. This may simplify operation for the user, such that the user may more easily attach the reservoir to the cap 4 without regard to the orientation of the cap 4 in relation to the reservoir. In particular embodiments, one or more antenna is provided on the side of the reservoir, for example, by printing the antenna directly onto the side of the reservoir with a suitably conductive ink. In other embodiments, the antenna may be provided on the reservoir in outer suitable manners including, but not limited to molding the antenna into the reservoir, attached the antenna to the reservoir by adhesive, applying the antenna to the reservoir as a label or the like.
In other examples of embodiments described above that employ one or more antennas in or connected with one or more RF detectable features 42, the antenna(s) may be mounted in the cap 4, base 2 or reservoir 1. In yet other embodiments, the antenna(s) are mounted in the infusion pump device 30 (as described above), and are arranged to electrically connect with one or more RF detectable features 42 on the cap 4, base 2 or reservoir 1, when the cap 4 (or the base/reservoir/cap unit) is properly or fully received within the reservoir receptacle 32 of the infusion pump device 30. In such embodiments, the cap 4 (or other component of the base/reservoir/cap unit) includes a set of one or more electrically conductive contacts that are included in or electrically connected to the RF detectable feature(s) 42 (e.g., RFID tags or the like) and are arranged to engage a corresponding set of one or more electrically conductive contacts on the infusion pump device 30, when the cap 4 (or base/reservoir/cap unit) is properly and fully received within the reservoir receptacle 32 of the infusion pump device 30. In such embodiments, the electrically conductive contacts on the cap 4 (or base/reservoir/cap unit) are not in electrical communication with the contacts on the infusion pump device 30, when the cap 4 (or base/reservoir/cap unit) is not properly and fully received within the reservoir receptacle 32 of the infusion pump device 30. Accordingly, in those embodiments, the RF detectable feature(s) 42 are electrically connected with one or more antenna(s), only when the cap 4 (or base/reservoir/cap unit) is properly and fully received within the reservoir receptacle 32 of the infusion pump device 30.
In examples of embodiments described above that employ one or more antennas mounted in or on the cap 4 (or another component of the base/reservoir/cap unit), the antenna is arranged in sufficient proximity to a vent opening or port 24 on the cap 4 to contact water or other liquid that may come into contact with (or enter) the opening or port. In such embodiments, the antenna is configured to operate properly when dry (or out of contact with water or other liquid), but does not operate (or operates in a detectably different manner) when in contact with water or other liquid. Accordingly, in such embodiments, the antenna may operate as a moisture sensor that becomes inoperative or operates in a detectably different manner, when in contact with water or other liquid (e.g., when the water or other liquid comes into contact with or enters the opening or vent). For example, electronics 60 may be configured to provide an alarm signal, inhibit operation of one or more functions of the infusion pump device 30 (such as, but not limited to, a fluid dispensing function), transmit a message or perform another predefined task, or any combination thereof, when the antenna is not operative, for example, due to the antenna being in contact with water or other liquid.
In various embodiments described above, one or more RF detectable features 42 are provided on the cap 4 (or other portion of the base/reservoir/cap unit). In particular embodiments, one or more RF detectable features 42 are provided on the plunger of a reservoir 1, and one or more RF detectors are provided on the infusion pump device 30, in sufficient proximity to the reservoir receptacle 32, to interact with the RF detectable feature 42 when the reservoir 1 is installed within the reservoir receptacle. For example, with reference to
In particular embodiments, the processing electronics is configured to detect the linear position of the plunger head 1a and determine whether or not the plunger head 1a is in a filled position (corresponding to a filled or un-used reservoir 1), or whether or not the plunger head 1a is in the last position from the previous use of the infusion pump device 30. In such embodiments, the processing electronics may be configured to perform a predefined action in response to a determination that the plunger head is not in a filled position or is not in its last position (which may indicate that a used or re-used reservoir has been installed in the infusion pump device). Such predefined action may include, but is not limited to, inhibiting infusion media delivery operation of the infusion pump device 30, determining particular operational settings for the infusion pump device 30, providing an alarm or control signals, recording data, providing authentication operations, or performing other predefined tasks.
In a further embodiment, the RF detectable feature 42 includes a passive (or active) RFID chip or other RF detectable feature that is provided with a serial number or other code (unique or not unique among other reservoirs 1). In such embodiments, when the reservoir 1 (or base/reservoir/cap unit) is initially installed in the infusion pump device 30 (or other suitable delivery device), or at a particular time after installation, electronics (such as electronics 60 in
In embodiments as in
In particular embodiments, the infusion pump device 30 (or other delivery device) is provided with an active RFID chip (or other active RF device), while the plunger of the reservoir 1 is provided with a passive RFID chip (or other passive RF device). In such an arrangement, a magnetic field can exist between the passive chip on the reservoir 1 and the active chip on the infusion pump device 30 (or other deliver device), where the magnitude of the magnetic field is dependent on the relative distance between the passive and active RF devices. In such embodiments, the magnetic field increases as the RF device on the reservoir piston moves closer to the RF device on the infusion pump device (or other delivery device), or decreases as the RF device on the reservoir piston moves further from the RF device on the infusion pump device (or other delivery device).
Accordingly, in such embodiments, the sensor element 34 includes a magnetic field detector, to detect the magnetic field or changes in the magnetic field between the RF devices. Also in such embodiments, electronics (such as electronics 60 in
In further embodiments, volume is determined in other suitable manners. For example, in particular embodiments, as part of a filling operation in which the reservoir 1 is filled (partially or fully) at a filling station or filling device, information corresponding to the volume (amount filled) is written onto the RFID chip or other RF device on the reservoir plunger (or on another portion of the reservoir). Then, when the reservoir is installed in the infusion pump device (or other delivery device), electronics (such as electronics 60 in
In particular embodiments, the electronics may be configured to display volume information (including, but not limited to the level or amount of infusion media remaining or used) on a user-perceptible display device on the infusion pump device 30. In embodiments in which the infusion pump device 30 (or other delivery device) is provided with an active RFID chip (or other active RF device), additional information may be written to and read from the active chip or device, where such information may include, but is not limited to volume information as described above, or one or more serial numbers or codes as described above.
In further embodiments, one or more wireless or wired communication devices is provided on the infusion pump device 30 (or other delivery device) and is configured and controlled to transmit volume information (or other information corresponding to detected parameters or associated characteristics) for display on another electronic device separate from or located remote from the infusion pump device 30. In particular embodiments, the wireless communication device(s) are configured to connect for communication on a communication network (such as, but not limited to the Internet), with one or more pre-defined network connected devices. Such one or more pre-defined network connected devices may be located at remote geographic locations relative to the infusion pump device 30 (or other delivery device). In particular embodiments, such network connected devices include a server configured to receive information from the infusion pump device 30 (or other delivery device) or from another network connected device (such as a cradle, user computer, or the like) that communicates with the infusion pump device 30 (or other delivery device). Such information may include, but is not limited to volume information, serial numbers or codes or other information regarding the reservoir 1, cap 4, base/reservoir/cap unit or infusion set as described above.
In such embodiments, the network connected server may be associated with an entity that records information, supplies associated products such as refills or replacement parts, provides medical treatment or medical insurance to the user or the like. In one example, the network connected server is associated with the Carelink™ system of Medtronic Inc. In other embodiments, the network connected server is one or more other servers and associated entities. Accordingly, such information may be employed by the server (or associated entity) to determine whether or not (or when) to send refills, new or replacement reservoirs or other components of the cap 4, base/reservoir/cap unit, or infusion set. In further embodiments, such information may be provided to the user's doctor or other medical treatment entity associated with the user (for tracking, diagnosing, adjusting treatment plans or other suitable uses). Thus, in such embodiments, refills or replacement components may be sent to users, automatically (without requiring the user to place an order), and usage information can be provided to the user's healthcare provider, insurance provider or other suitable entities, automatically.
In further embodiments, the network connected server is configured to provide (and the infusion pump device 30 or other delivery device is configured to receive) information through the above-noted network communication connection or other network connection. Such information may include, but is not limited to, instructions or recommendations for replacing or refilling a reservoir 1, cap 4, base/reservoir/cap unit or infusion set, messages or notices from healthcare providers, insurance carriers or manufacturers, recall notices or the like. In particular embodiments, electronics (such as electronics 60) in the infusion pump device 30 (or other delivery device) is configured to perform one or more predefined actions (as discussed above) in response to receipt of a predefined instruction, notice or message.
In further embodiments, a predefined plurality (or lot) of reservoirs 1 (or base/reservoir/cap units, infusion sets or components thereof) are supplied to a user, where the RFID chips (or other RF devices) store one or more serial numbers or codes (unique to each reservoir, base/reservoir/cap units, infusion sets or component thereof. In such embodiments, electronics (such as electronics 60) in the infusion pump device 30 (or other delivery device) may be configured to detect the serial numbers or codes of the reservoirs 1 (or base/reservoir/cap units, infusion sets or components thereof) when used in the infusion pump device 30 (or other delivery device). The detected serial numbers or codes are tracked (by the infusion pump device 30 or other delivery device, by a remote server as discussed above) to determine when a predefined number of the plurality (lot) of reservoirs 1 (or base/reservoir/cap units, infusion sets or components thereof) has been used, and to trigger an order (or re-order) of more reservoirs 1 (or base/reservoir/cap units, infusion sets or components thereof).
In yet further embodiments, volume detection as described above can be employed to detect a possible occlusion or blockage in the delivery path between the infusion pump device 30 (or other delivery device) and the user. In such embodiments, electronics (such as electronics 60) may be configured to perform volume detections as described above, to determine the actual displacement or position of the reservoir plunger (for example, by detection of the magnetic field strength as described above) and the motor count. In addition, the electronics 60 is configured to determine whether the motor count corresponds to the actual displacement of the reservoir plunger. An actual displacement of the reservoir plunger that is less than the amount of displacement that is supposed to occur with the detected number of motor counts may be an indication of an occlusion or blockage in the delivery path. In particular embodiments, upon detection of a possible occlusion or blockage (e.g., upon detection of the plunger displacement associated with the motor count exceeding the actual displacement of the reservoir plunger by a predefined threshold amount), the electronics is configured to perform a predefined action, such as, but not limited to one or more of the actions discussed above.
In particular embodiments as described above, one (or all) of the cap 4, reservoir 1 and the infusion pump device 30 is provided with at least one sensor element, and the other (or all) of the cap 4, reservoir 1 and the infusion pump device 30 is provided with at least one detectable feature that is detected by the sensor element(s) when the cap 4 (or base/reservoir/cap unit) is properly coupled with the infusion pump device 30. Certain embodiments as described above include one or more magnetic detectable features and magnet detection sensors, or one or more inductive members and inductive sensors. In other embodiments described above, each of the one or more detectable features 42 includes an RF detectable device or structure that can be detected by an RF sensor, and each sensor element 34 includes an RF sensor. In yet other embodiments, the one or more detectable features 42 include any combination of magnetic detectable devices, inductive detectable devices and RF detectable devices, while the one or more sensor elements 34 include any combination of one or more magnetic detection sensors, inductive sensors and RF sensors. Any of the embodiments described herein with respect to use involving RFID also may be implemented with physical wired connection, in lieu of a wireless RFID connection, between the reservoir 1, infusion set 50, and/or connection interface 40 and the infusion pump device 30 (or other device(s)).
In further embodiments, one or more (or a plurality of) RF detectable features 42 is included in a label (or smart label) that is adhered to, embedded in or otherwise attached to the reservoir 1, cap 4 or other component of the base/reservoir/cap unit. In particular embodiments, the label includes an adhesive-backed substrate or other support layer on which an RFID tag or other RF detectable feature (including antenna) is mounted. The substrate may be made of any suitable material, such as a flexible sheet material made of plastic, silicone, paper or fiber board, or the like. In other embodiments, the substrate is made of other suitable material such as, but not limited to other flexible materials or a rigid or semi-rigid material made of metal, plastic, ceramic, composite material or the like. In particular embodiments, the label can be directly adhered to the cap 4, reservoir 1, or other component of the base/reservoir/cap unit by an adhesive material on a back surface of the substrate. In other embodiments, the label is attached to the reservoir 1, cap 4 or other component of the base/reservoir/cap unit with another suitable attachment mechanism such as, but not limited to crimping, welding, magnetic connection, screws, bolts, clamps or other mechanical connection devices. The RFID device, and parts thereof, may span across multiple components and be part of, e.g., the reservoir 1, infusion set 50, tubing 52, connection interface 40, etc., or wholly integrated into any single one of the above-mentioned components.
In yet further embodiments, the label is configured in the form of a data strip having a lengthwise dimension and one or more (or a plurality of) RF detectable features along its lengthwise dimension. In other embodiments, the data strip has one or more (or a plurality of) other types of detectable features 42 as described herein (such as, but not limited to magnetic, inductive, optical, and mechanical detectable features) as an alternative or in addition to one or more RF detectable features 42 along its lengthwise dimension. In particular embodiments, the detectable features 42 include one or more optically detectable features in a pattern, such as, but not limited to a bar code pattern or other optically detectable pattern of elements having dark and light (or low or high reflective) characteristics.
In particular embodiments, the data strip is configured to extend around the cap 4, reservoir 1, or other component of the base/reservoir/cap unit (around the circumference or axis A), such that the one or more (or plurality of) detectable features 42 extend around the cap 4, reservoir 1, or other component of the base/reservoir/cap unit (around the circumference or axis A). In such embodiments, one or more sensors 34 are mounted in or to the infusion pump device 30. The sensor(s) 34 are supported at one or more fixed locations on the infusion pump device 30 for detecting the detectable feature(s) on the data strip, when the cap 4 (or base/reservoir/cap unit) is installed in the reservoir receptacle 32 of the infusion pump device 30.
In particular embodiments, one or more sensor(s) 34 are arranged around the circumference of the reservoir receptacle 32 and axis A for detection of one or more detectable features 42 on the label (or data strip). In such embodiments, the sensor(s) 34 and associated electronics (such as electronics 60 in
In particular embodiments, an array of detectable features 42 on a label or data strip as described above can provide a relatively precise detection of proper or improper alignment or proximity (or both), of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit relative to the reservoir receptacle 32, as described with respect to
Thus, in example embodiments in which the base/reservoir/cap unit is installed in the reservoir receptacle 32 by rotating the base/reservoir/cap unit around the axis A while inserting the base/reservoir cap unit into the reservoir receptacle 32, rotational position detection or linear position detection (or both) can be accomplished. In such embodiments, multiple detectable elements 42 are arranged on the label or data strip and spaced apart from each other around the circumference of the axis A, to allow detection of the rotational position (or movement) of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit around the axis A, relative to the infusion pump device 30. Alternatively or in addition, the multiple elements are arranged spaced apart in the axial dimension A of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit to allow detection of the linear position (or movement) of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit along the axis A, relative to the infusion pump device 30. Accordingly, in different embodiments, the sensor element(s) 34 provide one or more sensor signals representing a rotational position of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit, a linear position of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit, or a combination thereof.
In particular embodiments, each detectable feature comprises an RFID tag or other RF detectable feature or other type of detectable feature 42 as described herein (such as, but not limited to magnetic, inductive, optical, and mechanical detectable features) and is configured to represent a data value that is detectable by one or more (or each of a plurality of) sensor elements 34. In particular embodiments, the detectable features are printed in magnetically detectable ink, polarized or optically detectable ink, or other materials that can be readily applied to a label or data strip. In other embodiments, the detectable features are discrete elements that are attached to the label or data strip by adhesive or other suitable attachment mechanism. In particular embodiments, the detectable features (or the label or data strip) is made to be transparent or partially transparent, or colored to be invisible, partially invisible or camouflaged on the cap 4, reservoir 1 or other component of the base/reservoir/cap unit. In other embodiments, the detectable features (or the label or data strip) are configured to be viewable.
In further embodiments, the data value represented by each detectable feature 42 has one of two detectable states (for example, one of “0” or “1”, or one of positive or negative, or one of two other pre-defined values). In such embodiments, a label or data strip having a plurality of detectable features can be configured as a data strip having a plurality of detectable features 42, where each detectable feature represents one of the two detectable states (e.g., a “0” or a “1”). In particular examples of such embodiments, a plurality of the detectable features on the label or data strip pass adjacent to (and are read in series by) one or more sensor elements (34) fixed to the infusion pump device 30, as the cap 4, reservoir 1, or other component of the base/reservoir/cap unit is inserted into the reservoir receptacle 32 or rotated relative to the reservoir receptacle 32 (or both).
In particular embodiments, the detectable states of the detectable features 42 on the label or data strip represent particular information associated with the cap 4, reservoir 1, or other component of the base/reservoir/cap unit or infusion set connected thereto, such as, but not limited to, the characteristics of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit or infusion set described above. Thus, for example, each possible characteristic can be associated with (on a one-to-one basis or other pre-defined association) a particular pattern of detectable features 42 or a particular pattern of detectable values (such as, but not limited to “0's” and “1's”) of the detectable features 42 on the label or data strip. In such embodiments, such associations may be stored in a memory (such as memory 66 in
In further embodiments, a label or data strip is configured with two or more tracks of detectable features 42, where each track includes a series of two or more detectable features arranged in a linear row (or other predefined pattern). In one example, the two or more tracks are parallel to each other, such that two or more linear rows (or other patterns) of detectable features are arranged around the circumference of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit. In such embodiments, each of the plural track includes a plurality of detectable features 42 that have a pattern or values (or both) representing one or more characteristics of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit or infusion set.
In particular embodiments, one or more of the plural tracks is a clock track that provides a series of detectable elements evenly spaced (or spaced at predefined intervals) along the track. In particular embodiments, the detectable elements in the clock track are arranged in alternating fashion (such as, but not limited to, alternating “0's” and “1's”). In such embodiments, processing electronics (such as processing electronics 62 in
In particular embodiments, the label or data strip includes a predefined detectable feature 42 having a predefined detectable value, or a predefined pattern of detectable features 42, for example, at the end of track of detectable features. In such embodiments, the predefined detectable feature, value or pattern is arranged at a location corresponding to a fully installed or final position state of the cap 4, reservoir 1, or other component of the base/reservoir/cap unit in the reservoir receptacle 32. In other words, the predefined detectable feature, value or pattern is arranged at a location on the track to align with and be read by one or more sensor element(s) 34, when the cap 4, reservoir 1, or other component of the base/reservoir/cap unit is in a proper, fully installed position within the reservoir receptacle 32 (but not read, when the cap, reservoir or base/reservoir/cap unit is not properly or fully installed).
d. Mechanical Detection
Certain embodiments as described above include one or more magnetic, RF, or inductively detectable features and one or more magnet, RF or inductive detection sensors, and other embodiments include combinations thereof. In yet other embodiments, a mechanical detection is employed, where the one or more detectable features 42 include a mechanically detectable feature while the one or more sensor elements 34 include a mechanism that mechanically interacts with the mechanically detectable feature(s). In yet other embodiments, the one or more detectable features 42 include a combination of two or more of a magnetically detectable feature, an inductively detectable feature, an RF detectable feature and a mechanically detectable feature, while the one or more sensor elements 34 include a combination of two or more of a magnetic sensor, an inductive sensor, an RF sensor and a mechanical sensor.
Accordingly, arrangements and configurations of magnetic detectable features and sensors, inductively detectable features and inductive sensors and RF detectable features and sensors (as the detectable features and sensors 34 and 42) as described above and shown in
One example embodiment of a mechanical detection configuration is described with reference to
In embodiments in which the one or more sensor element(s) or detectable features are configured for mechanical detection, either the infusion pump device 30 or the cap 4 (or other component of the base/reservoir/cap unit), or both, holds a sensor device that includes a mechanically moveable member or actuator. The mechanically moveable member (actuator) is arranged to engage an engagement portion of the other of the infusion pump device 30 or the cap 4 (or other component of the base/reservoir/cap unit) and to be moved from a first position to a second position, when the cap 4 (or base/reservoir/cap unit) is being properly and fully received within the reservoir receptacle 32 of the infusion pump device 30. In such embodiments, the mechanically moveable member engages the engagement portion and is moved from the first position to the second position, as a result of a manual movement of the cap 4 (or base/reservoir/cap unit) into the reservoir receptacle 32 and to a proper and fully received position within the reservoir receptacle 32.
The mechanically moveable member is arranged to engage and activate an electrical switch, when the mechanically moveable member is moved to the second position, but is arranged to disengage and not activate the electrical switch when in the first position. Accordingly, a manual movement of the cap 4 (or base/reservoir/cap unit) into the reservoir receptacle 32 and to a proper and fully received position within the reservoir receptacle 32 causes the mechanically moveable member to move to the second position and engage and activate the electrical switch. The electrical switch is connected to electronics (such as electronics 60 discussed above) for detecting whether or not the switch is activated. Accordingly, by detecting the activation state of the electrical switch, the electronics determines whether or not the cap 4 (or base/reservoir/cap unit) is properly and fully received within the reservoir receptacle 32.
In the embodiment of
The channel 72 may be formed within the structure of the housing 33 of the infusion pump device 30 or within a further structure located within the housing 33. A first end of the channel 72 is open into the reservoir receptacle 32. A second end of the channel 72 is open into another portion of the interior of the housing 33 of the infusion pump device 30. In the illustrated embodiment, the channel 72 is linear along a longitudinal dimension (horizontal dimension in
As shown in
More specifically, the engagement portion 80 of the cap 4 (or other component of the base/reservoir/cap unit) has a surface that comes into contact with and engages a surface of the second end 78 of the moveable member 70, as the cap 4 (or the base/reservoir/cap unit) is manually inserted and moved into a proper and fully inserted position within the reservoir receptacle 32 of the infusion pump device 30.
As the cap 4 (or the base/reservoir/cap unit) is manually moved toward the proper and fully inserted position within the reservoir receptacle 32, the engagement portion 80 engages the second end 78 of the moveable member 70. Then, further movement of the cap 4 (or the base/reservoir/cap unit) toward the a proper and fully inserted position causes the engagement portion 80 to push the second end 78 of the moveable member 70 and move the moveable member 70 from a first position (shown in
In particular embodiments, the second end 78 of the moveable member 70 extends a small distance into the reservoir receptacle 32, when the moveable member 70 is in the first position (
In particular embodiments, the second end 78 of the moveable member 70 extends into the channel of the reservoir receptacle 32 by a distance sufficient to contact an outer surface of the cap 4 (or the base/reservoir/cap unit) and ride along that outer surface (allow that outer surface to slide over the second end 78 of the moveable member 70) without moving to the second position and, thus, without actuating the switch 76, as the cap 4 (or the base/reservoir/cap unit) is manually inserted into the reservoir receptacle 32 and rotated toward a proper position. When the cap 4 (or base/reservoir/cap unit) is properly and fully received (inserted and rotated into proper position) in the reservoir receptacle 32, the engagement portion 80 on the cap 4 (or the base/reservoir/cap unit) comes into engagement with the second end 78 of the moveable member 70 and imparts a sufficient force onto the moveable member 70 to push the first end 74 of the moveable member 70 against the switch 76 with enough force to activate the switch 76.
In particular embodiments, the second end 78 of the moveable member 70 (or the entire moveable member 70) is made of a material that is sufficiently compliant, flexible and resilient to be compressed at least at the second end 78 by the engagement portion 80, when the second end 78 of the moveable member 70 is contacted by the engagement portion 80. For example, the material may be sufficiently compliant and flexible to accommodate for different cap 4 sizes or for manufacturing tolerances (or both). Thus, the second end 78 of the moveable member 70 may extend into the reservoir receptacle 32 by a distance sufficient to contact a cap 4 having any size outer diameter (within a predefined range), by compressing sufficiently to accommodate larger diameters within that range.
In particular embodiments, the moveable member 70 is sufficiently compliant, flexible and resilient to transfer at least a portion of the compression force on the second end 78, through the moveable member 70, to produce a resulting expansion or outward bulging of the first end 74 by an amount that applies a force on the switch 76 sufficient to activate the switch 76. Thereafter, when the engagement portion 80 is moved away from the second end 78 of the moveable member 70 (for example, when the cap 4 or base/reservoir/cap unit is being withdrawn from the reservoir receptacle 32), the second end 78 of the moveable member 70 is no longer compressed and, due to the natural resilience of the material of the moveable member 70, the first end 74 returns to a state in which it is not imparting an activation force on the switch 76, to cause the switch to change state (for example, turn off).
Thus, in certain embodiments, the moveable member 70 may be arranged to move from the first position to the second position, without physically shifting toward the switch 76 other than by the action of compressing at the second end 78 to cause the first end 74 to bulge out or expand toward or against the switch 76, as described above. In such embodiments, the moveable member 70 may be configured to avoid or minimize movement of seal structures 86 (described further, below) during movement of the moveable member 70, thus reducing wear on the seal structures 86 and improving sealing functions. In other embodiments, the entire moveable member 70 is also shifted toward the switch 76 while the first end 74 is expanded to activate the switch 76, when the second end 78 of the moveable member 70 is contacted by the engagement portion 80. In yet other embodiments, the moveable member 70 is not compressed or expanded, but, instead, is shifted without expansion toward the switch 76, when the second end 78 of the moveable member 70 is contacted by the engagement portion 80.
In particular embodiments in which the moveable member 70 shifts toward the switch 76 when moving from the first position to the second position, the moveable member 70 includes or is engaged by a bias member 82 that imparts a bias force on the moveable member 70 to bias the moveable member 70 toward the first position (
In such embodiments, the moveable member 70 includes a protrusion, extension or other structure that provides a stop surface for stopping further motion of the moveable member 70 in the direction of the first position, when the moveable member 70 reaches the first position. In the embodiment of
In particular embodiments, one or more seals or other features are provided for inhibiting the passage of moisture, liquid or other fluid through the channel 72, for example, in the event that moisture, liquid or other fluid enters the reservoir receptacle 32. Thus, the passage of moisture, liquid or other fluid from the reservoir receptacle 32 to other areas within the infusion pump housing 33 can be inhibited, for example, in the event that the infusion pump device 30 is exposed to moisture, liquid or other fluid (such as, for example, rain, pool water, shower water, or the like).
In the embodiment of
The switch 76 may be any suitable electrical switch that has a first state (not activated) and a second state (activated), and that is configured to change states when pushed or contacted by the moveable member 70. In one embodiment, the switch 76 is a push-button type switch that has a button structure that can be pushed (e.g., by the moveable member 70) to change the state of the switch. In other embodiments, other suitable switch configurations may be employed. In certain embodiments, the moveable member 70 can form part of the electrical switch, where the moveable member 70 is made of an electrically conductive material (or includes an electrically conductive material at the first end 74) and makes electrical contact with one or more electrodes on the switch 76 to change the state of the switch, when the moveable member 70 is in the second position (e.g.,
In the embodiment of
The embodiment of
In other embodiments, one or more moveable members 70 and associated switches 76 are employed to detect one or more other characteristics associated with the cap 4 or the base/reservoir/cap unit or components thereof, in addition to or as an alternative to detecting proper connection with the infusion pump device 30. In various embodiments, such other characteristics include but are not limited to characteristics of the reservoir 1 (or its contents), infusion set 50, connection interface 40, or any combination thereof, as described above with respect to magnetic detection or RF detection.
In those embodiments, a particular characteristic may be associated with one or more mechanical parameters such as, but not limited to: the existence of one or more predefined engagement portions 80 on the cap 4, or the location or pattern of locations of one or more predefined engagement portions 80 on the cap 4 (circumferential or linearly location relative to the dimension of the axis A), the shape or other parameter of the predefined engagement portion 80, or any combination thereof. In particular embodiments, each different predefined characteristic of the reservoir 1, infusion set 50 or connection interface 40, is associated (for example, on a one-to-one basis) with a respectively different predefined location, pattern of locations, or other detectable parameter of the engagement portion 80. In those embodiments, the processing electronics 62 is configured to determine a characteristic of the reservoir 1, infusion set 50 or connection interface 40 from the signals received from the one or more switch(es) 76.
For example, the processing electronics 62 may be configured to compare information received from one or more switches 76 with information stored in a table or in another suitable data arrangement. The table or other data arrangement is stored in the electronic memory 66. The table or other data arrangement associates a plurality of different predefined engagement portion 80 locations (or a plurality of different predefined patterns of engagement portion 80 locations on the cap) with a corresponding plurality of predefined characteristics, as described above with respect to the magnetic, inductive and RF detection embodiments and incorporated herein by reference.
In particular embodiments, based on one or more of the parameters detected from the signals received from the one or more switches 76, the processing electronics 62 is further configured to determine corresponding characteristics and, based on those characteristics, do one or more of: determine operational settings for the infusion pump device 30, provide signals to the drive device or other components of the infusion pump device 30, provide one or more alarm signals, and record data representing detected states or conditions of one or more of the cap 4, base/reservoir/cap unit, and infusion pump device 30, as described above with regard to magnetic detection, inductive detection, and RF detection embodiments.
In further embodiments, one or more wireless or wired communication devices is provided on the infusion pump device 30 (or other delivery device) and is configured and controlled to transmit volume information (or other information corresponding to detected parameters of the RF detectable feature, or associated characteristics) for display on another electronic device separate from or located remote from the infusion pump device 30. In particular embodiments, the wireless communication device(s) are configured to connect for communication on a communication network (such as, but not limited to the Internet), with one or more pre-defined network connected devices. Such one or more pre-defined network connected devices may be located at remote geographic locations relative to the infusion pump device 30 (or other delivery device). In particular embodiments, such network connected devices include a server configured to receive information from the infusion pump device 30 (or other delivery device) or from another network connected device (such as a cradle, user computer, or the like) that communicates with the infusion pump device 30 (or other delivery device). Such information may include, but is not limited to volume information, serial numbers or codes or other information regarding the reservoir 1, cap 4, base/reservoir/cap unit or infusion set as described above.
In such embodiments, the network connected server may be associated with an entity that records information, supplies associated products such as refills or replacement parts, provides medical treatment or medical insurance to the user or the like. In one example, the network connected server is associated with the Carelink™ system of Medtronic Inc. In other embodiments, the network connected server is one or more other servers and associated entities. Accordingly, such information may be employed by the server (or associated entity) to determine whether or not (or when) to send refills, new or replacement reservoirs or other components of the cap 4, base/reservoir/cap unit, or infusion set. In further embodiments, such information may be provided to the user's doctor or other medical treatment entity associated with the user (for tracking, diagnosing, adjusting treatment plans or other suitable uses). Thus, in such embodiments, refills or replacement components may be sent to users, automatically (without requiring the user to place an order), and usage information can be provided to the user's healthcare provider, insurance provider or other suitable entities, automatically.
In further embodiments, the network connected server is configured to provide (and the infusion pump device 30 or other delivery device is configured to receive) information through the above-noted network communication connection or other network connection. Such information may include, but is not limited to, instructions or recommendations for replacing or refilling a reservoir 1, cap 4, base/reservoir/cap unit or infusion set, messages or notices from healthcare providers, insurance carriers or manufacturers, recall notices or the like. In particular embodiments, electronics (such as electronics 60) in the infusion pump device 30 (or other delivery device) is configured to perform one or more predefined actions (as discussed above) in response to receipt of a predefined instruction, notice or message.
In particular embodiments, the engagement portion 80 may be a raised or predefined surface, projection, bump, rib, gradual rise, detent, aperture, groove or other mechanically detectable feature provided in any suitable location on the cap 4 (or other component of the base/reservoir/cap unit) for contacting the second end 78 of the moveable member 70, when the cap 4 (or the base/reservoir/cap unit) is manually inserted and moved into the a proper and fully inserted position within the reservoir receptacle 32 of the infusion pump device 30. The engagement portion 80 may be made sufficiently small or of a size or shape (or both) to align with and engage the moveable member 70 only when the cap 4 (or base/reservoir/cap unit) is fully and properly received within the reservoir receptacle, and not align or engage the moveable member 70 in any other position of the cap 4 (or base/reservoir/cap unit). In such embodiments, the size or shape (or both) of the engagement portion 80 may be configured to provide a relatively precise detection of a proper connection of the cap 4 (or base/reservoir/cap unit) with the infusion pump device 30.
In further embodiments, a plurality of engagement portions 80 are provided at suitable locations on the cap 4 (or other component of the base/reservoir/cap unit) to engage the second end 78 of the moveable member 70 in a corresponding plurality of different insertion positions of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32. Thus, a user may insert the cap 4 (or base/reservoir/cap unit) into the reservoir receptacle 32 in any of the plurality of different insertion positions to cause one of the engagement portions 80 to engage the second end 78 of the moveable member 70. Alternatively or in addition, a plurality of engagement portions 80 may be provided at suitable locations on the cap 4 (or base/reservoir/cap unit) to individually engage the second end 78 of the moveable member 70 at a corresponding plurality of different positions of the cap 4 (or base/reservoir/cap unit) as the cap 4 (or base/reservoir/cap unit) is being inserted or rotated within the reservoir receptacle 32. In such embodiments, the electronics 60 are configured to detect multiple positions of the cap 4 (or base/reservoir/cap unit) relative to the reservoir receptacle 32, for example, to detect an improper connection of the cap 4 (or base/reservoir/cap unit) with the infusion pump device 30 or to detect the movement of the cap 4 (or base/reservoir/cap unit) toward or away from a proper or full connection position relative to the reservoir receptacle 32.
In particular embodiments, the engagement portion 80 is provided on one or more of the threads 19 (see
In further embodiments, more than two threads 19 and engagement portions 80 is provided at mutually spaced positions around the circumference of the cap 4 (or base/reservoir/cap unit), and a corresponding number of threads or grooves is provided in the reservoir receptacle 32 of the infusion pump device 30, to accommodate more than two different alignment orientations for threading the cap 4 (or base/reservoir/cap unit) into the reservoir receptacle 32. In any of the embodiments employing threads 19, a plurality of engagement portions 80 may be provided on any one or more of the threads 19. In such embodiments, one or more engagement portions 80 may be arranged to engage and then disengage the second end 78 of the moveable member 70, as the cap 4 (or base/reservoir/cap unit) is threaded into the reservoir receptacle 32. The electronics 60 may be configured to detect and count the number of engagements and disengagements, for determining whether or not the cap 4 (or base/reservoir/cap unit) is fully and properly received in the reservoir receptacle 32. Alternatively or in addition, the electronics 60 may be configured to detect a particular rotational position or linear position (or both) of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32, based on the number of detected engagements (or engagements and disengagements) of engagement portions 80 with the moveable member 70.
For example, in embodiments in which two engagement portions 80 are provided on a thread 19, the electronics 60 may be configured to determine that a proper connection of the cap 4 (or base/reservoir/cap unit) is made when the electronics 60 has detected two activations of the switch 76. Alternatively or in addition, the electronics may be configured to determine that the cap 4 (or base/reservoir/cap unit) has been rotated by one half the proper amount (or other particular amount) or moved linearly by one half the proper amount (or other particular amount) within the reservoir receptacle, when only one activation of the switch 76 has occurred. Other embodiments may employ any suitable number of engagement portions 80 on one or more threads 19 (or on another suitable surface of the cap 4 or base/reservoir/cap unit).
As discussed herein, the movable member 70 is supported within a channel 72 located in the housing 33 of the infusion pump device 30. In particular embodiments, the housing 33 includes a housing portion 33′ that contains the channel 72 and further contains a volume in which the switch 76 and circuit board 90 are located. In further embodiments, the housing portion 33′ also includes at least a portion of or all of the reservoir receptacle 32. For example, with reference to the orientation in
In one example embodiment, the housing portion 33′ forms part of the reservoir receptacle 32 or has a part that fits into or around the reservoir receptacle 32, and is molded to or otherwise adhered or connected to a further portion of the housing 33 that forms the reservoir receptacle. In particular embodiments, the further portion of the housing 33 that forms the reservoir receptacle is molded over (or adhered to or otherwise connected to) a part of the housing portion 33′, for example, during manufacture or assembly of the infusion pump device 30.
e. Optical Detection
Certain embodiments as described above include one or more magnetic detectable features and magnet detection sensors, while other embodiments include one or more inductively, RF, or mechanically detectable features and one or more RF, inductive or mechanical detection sensors, and other embodiments include any combination of one or more magnetic, inductive, RF or mechanical detectable features and sensors. In yet other embodiments, an optical detection is employed, where the one or more detectable features 42 include an optically detectable feature, while the one or more sensors 34 include an optical sensor. In yet other embodiments, the one or more detectable features 42 include a combination of two or more of a magnetically detectable feature, an inductively detectable feature, an RF detectable feature, a mechanically detectable feature and an optically detectable feature, while the one or more sensors 34 include a combination of two or more of a magnetic sensor, an inductive sensor, an RF sensor, a mechanical sensor and an optical sensor.
Accordingly, arrangements and configurations of magnetic, inductive, RF and mechanical sensor elements and detectable features (as the sensor elements and detectable features 34 and 42) as described above and shown in
One example embodiment of an optical detection configuration is described with reference to
In the embodiment in
As shown in
The housing portion 33″ includes one or more passages through which an optical signal transmitted in the direction of arrow 104 is communicated, and through which a reflected optical signal in the direction of arrow 104 is communicated. In the embodiment of
In particular embodiments, each of the channels includes a seal (for example, seal 112 in channel 108 and seal 114 in channel 110) configured to inhibit the passage of moisture, liquid or other fluid from the interior of the reservoir receptacle 32 into the housing portion 33″. In the embodiment of
In the embodiment of
In particular embodiments, the housing portion 33″ is formed separate from other portions of the housing 33 (for example, as shown in
In addition, the housing portion 33″ in
The cap 4 (or other portion of the base/reservoir/cap unit) includes one or more (or a plurality of) features that affect an optically detectable characteristic of an optical signal emitted onto the feature(s). More specifically, when the cap 4 (or the base/reservoir/cap unit) is inserted into the reservoir receptacle 32, the outer surface of the cap 4 (or other portion of the base/reservoir cap unit) is moved into a position at which it is illuminated by the optical signal beam emitted from the optical emitter device 100. In particular embodiments, as the cap 4 (or base/reservoir/cap unit) is manually inserted into the reservoir receptacle 32, the cap 4 (or base/reservoir/cap unit) is rotated or moved linearly (or both) along axis A relative to infusion pump device 30, toward a fully installed position within the reservoir receptacle 32. During that action, portions of the outer surface of the cap 4 (or other portion of the base/reservoir/cap unit) move past the optical signal passage(s) in the housing portion 33″. Accordingly, different regions or areas of the outer surface of the cap 4 (or base/reservoir/cap unit) become aligned with the optical signal passage(s) and are illuminated (at least temporarily) by an optical signal from the optical emitter 100, as the cap 4 (or base/reservoir/cap unit) is moved to its fully installed position within the reservoir receptacle 32. In addition, once the cap 4 (or base/reservoir/cap unit) is in the fully and properly installed position within the reservoir receptacle 32, a particular (predefined) region or area of the cap 4 (or other portion of the base/reservoir/cap unit) is aligned with the optical signal passage(s) and is illuminated by an optical signal from the optical emitter 100.
Some or all of the surface of the cap 4 (or base/reservoir/cap unit) that becomes illuminated during installation of the cap 4 (or base/reservoir/cap unit) is provided with one or more features that affect or alter the optical signal in a detectable manner. In particular embodiments, a plurality of detectable features are provided on the surface of the cap 4 (or base/reservoir/cap unit) at locations that align with the optical signal passage(s) in the housing portion 33″ (and, thus, become illuminated by an optical signal from the optical emitter 100) at different instantaneous positions of the cap 4 (or base/reservoir/cap unit) as the cap 4 (or base/reservoir/cap unit) is moved towards and into its fully and properly installed position within the reservoir receptacle 32. In such embodiments, the electronics 60 are configured to detect multiple different positions of the cap 4 (or base/reservoir/cap unit) relative to the reservoir receptacle 32, including a fully and properly installed position, based on optical signals affected or altered by detectable features at the multiple different positions, as detected by the detector 102.
In particular embodiments, portions of the outer surface of the cap 4 (or base/reservoir/cap unit) include an optically reflective feature that reflects an optical signal emitted by the optical emitter 100. For example, the outer surface of the cap 4 (or base/reservoir/cap unit) may be formed of or coated with an optically reflective material. Alternatively or in addition, an optically reflective material may be adhered to the cap 4 (or base/reservoir/cap unit). In such embodiments, one or more confined regions or areas on the cap 4 (or base/reservoir/cap unit) is provided with a feature that is not optically reflective or has a detectably different optical reflective characteristic than other areas on the cap 4 (or base/reservoir/cap unit). Accordingly, when the cap 4 (or base/reservoir/cap unit) is initially inserted into the reservoir receptacle 32, an optical signal from the optical emitter 100 may illuminate the reflective material on the cap 4 (or base/reservoir/cap unit) and be reflected to the optical detector 102. Electronics 60 may be configured to detect the presence of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32, in response to the detection of the reflected signal by (and output signal of) the optical detector 102.
Then, as the cap 4 (or base/reservoir/cap unit) is rotated or linearly moved (or both) toward its full and proper installation position within the reservoir receptacle 32, one or more of the regions or areas provided with the feature that does not reflect (or alters a reflection characteristic) is moved into alignment with the optical signal passage(s) in the housing portion 33″. As a result, the optical signal from the optical emitter 100 is not reflected (or is reflected in a detectably different manner relative to other portions of the cap 4 or base/reservoir/cap unit) and the optical detector 102 provides a corresponding output signal to the electronics 60. In such embodiments, the electronics 60 is configured to determine the position of the cap 4 (or base/reservoir/cap unit), based on the output signal from the optical detector 102.
By arranging the optically detectable features at predefined locations on the cap 4 (or base/reservoir/cap unit) that align with the optical signal passage(s) in the housing portion 33″ when the cap 4 (or base/reservoir/cap unit) is at predefined, corresponding positions within the reservoir receptacle 32, the electronics 60 may be configured to determine the position of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32 by counting the detected optical features detected by (or otherwise evaluating the output signal received from) the optical detector 102 as the cap 4 (or base/reservoir/cap unit) is moved into the reservoir receptacle 32. Furthermore, by arranging at least one optically detectable feature at a predefined location on the cap 4 (or base/reservoir/cap unit) that aligns with the optical signal passage(s) in the housing portion 33″ when the cap 4 (or base/reservoir/cap unit) is at the fully and properly installed position within the reservoir receptacle 32, the electronics 60 may be configured to determine that the cap 4 (or base/reservoir/cap unit) is fully and properly installed within the reservoir receptacle 32, based on an output signal from the optical detector 102 corresponding to the detection of that feature.
In the above embodiments in which the outer surface of the cap 4 (or base/reservoir/cap unit) has an optically reflective outer surface and the detectable feature(s) include one or more features that are not optically reflective or have a different reflective characteristic (detectable parameter), the one or more features may include, but are not limited to, a material, coating, surface contour or pattern (ribs, grooves, undulations, roughness, abrasions, apertures, or the like) or attached article that inhibits or changes optical reflective characteristics. In particular embodiments, the one or more optically detectable features include one or more apertures or detents in the reflective outer surface of the cap 4 (or base/reservoir/cap unit). In yet further embodiments, the one or more optically detectable features include the existence of one or more optically detectable feature on the cap; the location or pattern of locations of one or more optically detectable feature on the cap; the type of optically detectable feature on the cap; the type or content of data stored by the optically detectable feature; or the polarity, direction or orientation of the signal emitted by the optically detectable feature. In yet further embodiments, the optically detectable feature includes a machine-readable pattern of optically detectable regions, such as, but not limited to a bar code or 2D data matrix or liner code. In such embodiments, the pattern of optically detectable regions represents encoded information that can be read by electronics 60. In particular embodiments, the one or more optically detectable features include one or more adhesive-backed tags that are adhered to the cap 4 (or base/reservoir/cap unit) at one or more predefined locations and that have an outer surface has an optically detectable feature as described herein or otherwise inhibits or detectably alters reflection of an optical signal from the optical emitter 100.
In other embodiments, the outer surface of the cap 4 (or base/reservoir/cap unit) is configured to inhibit optical reflection, while the one or more optically detectable features are configured to be detectably reflective. In such embodiments, the electronics 60 is configured to detect one or more relative positions of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32 by evaluating signals from the optical detector 102 representing detection of the reflective optically feature(s) on the cap 4 (or base/reservoir/cap unit).
In further embodiments, one or more optically detectable features on the cap 4 (or base/reservoir/cap unit) are configured to alter the optical signal in an optically detectable manner by altering one or more of the wavelength, direction, phase or other detectable parameter of the optical signal. In yet further embodiments, a plurality of different optically detectable features are provided on the cap 4 (or base/reservoir/cap unit) at respectively different predefined locations relative to each other, such that a different respective detectable feature is aligned with the optical signal passage(s) in the housing portion 33″ at different respective positions of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32. In such embodiments, each different optically detectable feature can be configured to provide to the optical detector 102 a different detectable reflective signal (relative to the other optically detectable features on the cap 4 or base/reservoir/cap unit), when aligned with the optical signal passage in the housing portion 33″. Accordingly, the optical detector 102 is provided a different detectable reflected signal and, thus, provides a different output signal at different respective positions of the cap 4 (or base/reservoir/cap unit). In such embodiments, the electronics 60 is configured to determine the position of the cap 4 (or base/reservoir/cap unit) relative to the reservoir receptacle 32, based on the output signal of the optical detector 102.
The optical emitter device 100 may be any suitable device that emits an optically detectable signal. In particular embodiments, the optical emitter device 100 includes a light emitting diode (LED) device and LED driver circuit that is configured to produce an optical output signal having a predefined wavelength or peak wavelength, radiant intensity, angle of intensity, or ranges thereof. In particular embodiments, the optical emitter device 100 is an infrared (IR) device configured to provide an IR output signal. In other embodiments, other suitable optical emitter devices may be employed including, but not limited to, devices that operate in other wavelengths outside of IR.
The optical detector device 102 may be any suitable device that detects an optical signal output by the optical emitter 100 and reflected from the cap 4 (or base/reservoir/cap unit). In embodiments in which the optical emitter 100 includes an IR LED device, the optical detector device 102 includes an IR phototransistor or other device configured to detect IR radiation. In other embodiments, the optical detector device 102 may include, but is not limited to, one or more of a phototransistor, photoresistor, photodiode, photovoltaic cell, photomultiplier, photo Schmitt Trigger, charge-coupled device (CCD), active-pixel sensor (APS) or other suitable device that reacts in a detectable matter to an optical signal.
The embodiment of
In other embodiments, one or more optical sensors (optical emitter-detector pairs) are employed to detect one or more other characteristics associated with the cap 4 or the base/reservoir/cap unit or components thereof, in addition to or as an alternative to detecting proper connection with the infusion pump device 30. In various embodiments, such other characteristics include but are not limited to characteristics of the reservoir 1 (or its contents), infusion set 50, connection interface 40, or any combination thereof, as described above with respect to magnetic detection, RF detection or mechanical detection.
In those embodiments, a particular characteristic may be associated with one or more detectable parameters of the optically detectable elements, such as, but not limited to: the existence of one or more optically detectable elements on the cap 4, the location or pattern of locations of one or more optically detectable elements on the cap 4 (circumferential or linearly location relative to the dimension of the axis A), the optically detectable pattern, shape, wavelength or peak wavelength, radiant intensity, angle of intensity or other detectable parameter of the optically detectable elements, or any combination thereof. In particular embodiments, each different predefined characteristic of the reservoir 1, infusion set 50 or connection interface 40, is associated (for example, on a one-to-one basis) with a respectively different predefined detectable parameter of the optically detectable elements. In those embodiments, the processing electronics 62 are configured to determine a characteristic of the reservoir 1, infusion set 50 or connection interface 40 from the signals received from the one or more optical sensors (optical emitter-detector pairs), for example, using a process as described with respect to process 150 in
For example, the processing electronics 62 may be configured to compare information received from one or more optical sensors (optical emitter-detector pairs) with information stored in a table or in another suitable data arrangement. The table or other data arrangement is stored in the electronic memory 66. The table or other data arrangement associates a plurality of different predefined optically detectable elements, or locations or patterns of locations of one or more optically detectable elements, the optically detectable pattern, shape or other parameter of the optically detectable elements, or any combination thereof with a corresponding plurality of predefined characteristics, as described above with respect to the magnetic, RF and mechanical detection embodiments and incorporated herein by reference.
In particular embodiments, based on one or more of the parameters (or optical signature) detected from the signals received from the one or more optical sensors (optical emitter-detector pairs), the processing electronics 62 is further configured to determine corresponding characteristics and, based on those characteristics, do one or more of: determine operational settings for the infusion pump device 30, provide signals to the drive device or other components of the infusion pump device 30, provide one or more alarm signals, and record data representing detected states or conditions of one or more of the cap 4, base/reservoir/cap unit, and infusion pump device 30, as described above with regard to magnetic detection, RF detection and mechanical embodiments.
In further embodiments, one or more wireless or wired communication devices is provided on the infusion pump device 30 (or other delivery device) and is configured and controlled to transmit volume information relating to the volume of infusion fluid remaining in or dispensed from the reservoir 1 (or other information corresponding to detected parameters of the one or more optically detectable elements or associated characteristics) for display on another electronic device separate from or located remote from the infusion pump device 30. In particular embodiments, the wireless communication device(s) are configured to connect for communication on a communication network (such as, but not limited to the Internet), with one or more pre-defined network connected devices. Such one or more pre-defined network connected devices may be located at remote geographic locations relative to the infusion pump device 30 (or other delivery device). In particular embodiments, such network connected devices include a server configured to receive information from the infusion pump device 30 (or other delivery device) or from another network connected device (such as a cradle, user computer, or the like) that communicates with the infusion pump device 30 (or other delivery device). Such information may include, but is not limited to information corresponding to one or more detected parameters or one or more associated characteristics, or other information regarding the reservoir 1, cap 4, base/reservoir/cap unit or infusion set as described above.
In such embodiments, the network connected server may be associated with an entity that records information, supplies associated products such as refills or replacement parts, provides medical treatment or medical insurance to the user or the like. In one example, the network connected server is associated with the Carelink™ system of Medtronic Inc. In other embodiments, the network connected server is one or more other servers and associated entities. Accordingly, such information may be employed by the server (or associated entity) to determine whether or not (or when) to send refills, new or replacement reservoirs, caps, infusion set needle housings, infusion set tubing, or other components of the cap 4, base/reservoir/cap unit, or infusion set. In further embodiments, such information may be provided to the user's doctor or other medical treatment entity associated with the user (for tracking, diagnosing, adjusting treatment plans or other suitable uses). Thus, in such embodiments, refills or replacement components may be sent to users, automatically (without requiring the user to place an order), and usage information can be provided to the user's healthcare provider, insurance provider or other suitable entities, automatically.
In further embodiments, the network connected server is configured to provide (and the infusion pump device 30 or other delivery device is configured to receive) information through the above-noted network communication connection or other network connection. Such information may include, but is not limited to, instructions or recommendations for replacing or refilling a reservoir 1, cap 4, base/reservoir/cap unit or infusion set, messages or notices from healthcare providers, insurance carriers or manufacturers, recall notices or the like. In particular embodiments, electronics (such as electronics 60) in the infusion pump device 30 (or other delivery device) is configured to perform one or more predefined actions (as discussed above) in response to receipt of a predefined instruction, notice or message.
f. Electrical Contact Detection
Certain embodiments as described above include one or more magnetic detectable features and magnet detection sensors, while other embodiments include one or more inductively, RF, mechanically or optically detectable features and inductive, RF, mechanical or optical detection sensors. Other embodiments include any combination of one or more magnetic, inductive, RF, mechanical or optical detectable features and sensors. In yet other embodiments, an electrical contact detection is employed, where the one or more detectable features 42 include a first electrical contact feature, while the one or more sensors 34 include an electrical contact sensor having a further electrical contact feature arranged to selectively make electrical contact with the first electrical contact feature. In yet other embodiments, the one or more detectable features 42 include a combination of two or more of a magnetically detectable feature, an inductively detectable feature, an RF detectable feature, a mechanically detectable feature, an optically detectable feature, or an electrical contact feature while the one or more sensors 34 include a combination of two or more of a magnetic sensor, an inductive sensor, an RF sensor, a mechanical sensor, an optical sensor and an electrical contact sensor.
Accordingly, arrangements and configurations of magnetic, inductive, RF, mechanical and optical sensor elements and detectable features (as the sensor elements and detectable features 34 and 42) as described above and shown in
Example embodiments of electrical contact detection configurations are described with reference to
Each of the electrical contact features 130 and 132 may include one or more of any suitable electrically conductive material, including, but not limited to, an electrically conductive metal member, plating, coating, ink, or other material suitable for making an electrical contact as described herein. The electrical contact feature 130 may be attached to, embedded in, molded in, applied onto or otherwise affixed to a wall portion of the cap body 5. Similarly, the electrical contact feature 132 may be attached to, embedded in, molded in, applied onto or otherwise affixed to a wall portion of the housing 33 within the reservoir receptacle 32.
In particular embodiments, one or both of the electrical contact features 130 and 132 includes a biased portion that is biased in a radial direction relative to the axis A, for example, where the first electrical contact feature 130 is biased radially outward (away from the axis A), or the second electrical contact feature 132 is biased radially inward relative to the axis A (or both electrical contact features are biased). In particular embodiments, at least one of the electrical contact features 130 and 132 has smooth, strip or pad configuration. In the embodiment in
Example electrical contact feature configurations 130 (detached from the cap body 5) are shown in
In the embodiments of
In the embodiment of
In the embodiment of
Prior to being contacted by the biased members 130a and 130b, the pads 132a and 132b are electrically separated from each other, but connected to a sensor circuit that is configured to detect electrical connection (or shorting) of the pads 132a and 132b. Accordingly, the sensor circuit 34 is configured to detect a condition of the pads 132a and 132b being electrically connected together (or shorted) when the pads 132a and 132b are contacted by the biased members 130a and 130b, respectively.
In the embodiment of
In particular embodiments, the electrical contact feature 132 is provided in a wall portion of the housing 33 of the infusion pump device 30. In other embodiments, the electrical contact feature 132 is provided in an upper ring member 137 that is connected to the housing 33 of the infusion pump device, at the upper end (the open end) of the reservoir receptacle 32. The upper ring member 137 may be made of any suitably rigid material, such as, but not limited to plastic, metal, ceramic, wood, composite material, or any combination thereof, and may be connected to the housing 33 in any suitable manner, including, but not limited to threads, screws, bolts, clamps, adhesive materials, welds, slot and groove connectors or the like. In such embodiments, the upper ring member 137 may include some or all of the electronics 60. Alternatively, the upper ring member 137 may include one or more electrical contacts that electrically connect with corresponding electrical contacts on the housing 33, to electrically couple the electrical contact feature 132 with electronics 60 located in the infusion pump device 30.
In particular embodiments, electronics 60 (coupled with the sensor circuit is 34) is configured to detect the presence of the cap 4 (or base/reservoir/cap unit) in a properly installed position within the reservoir receptacle, in response to a detection of the pads 132a and 132b being electrically connected together (or shorted) by the electrical contact feature 130 on the cap 4. In other embodiments, the electronics 60 is configured to detect other parameters associated with the electrical contact feature 130 and associate the detected parameters with one or more characteristics of the cap 4 (or associated reservoir 1 or base/reservoir/cap unit, or infusion set connected thereto).
In particular embodiments of
If the cap 4 (or base/reservoir/cap unit) is rotated or linearly moved (or both) away from a fully installed position within the reservoir receptacle 32, the electrical contact feature 130 on the cap 4 (or base/reservoir/cap unit) is moved out of engagement with the electrical contact feature 132 on the reservoir receptacle 32. As a result, the electrical circuit is broken or disconnected between the conductive elements (pads 132a and 132b, or biased members 132c and 132d) of the second electrical contact feature 132. Electronics 60 may be configured to detect the movement of the cap 4 (or base/reservoir/cap unit) from a fully installed position within the reservoir receptacle 32, in response to the detection of the electrical circuit being broken between conductive elements (pads 132a and 132b, or biased members 132c and 132d) of the second electrical contact feature 132.
In further embodiments, a plurality of electrical contact features 130 are arranged at a corresponding plurality of different predefined locations on the cap 4 (or base/reservoir/cap unit), such that one or more electrical contact features 130 align with one or more electrical contact features 132 in the reservoir receptacle 32, when the cap 4 (or base/reservoir/cap unit) is at predefined, corresponding positions within the reservoir receptacle 32. In such embodiments, the electronics 60 may be configured to determine the position of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32 by counting electrical circuit connections (shorts) or disconnections (breaks) detected as the cap 4 (or base/reservoir/cap unit) is moved into the reservoir receptacle 32.
In further embodiments, one or more electrical contact features on the cap 4 (or base/reservoir/cap unit) are configured to have a predetermined electrically detectable characteristic or parameter, such as, but not limited to, a particular electrical resistance or impedance characteristic or parameter. In such embodiments, the electronics 60 is configured to detect the one or more characteristics or parameters of the electrical contact feature 130 and associate the detected characteristic(s) or parameter(s) with one or more characteristics of the cap 4 (or base/reservoir/cap unit), or with the reservoir 1 (or its contents), infusion set 50, connection interface 40, or any combination thereof, as described above with respect to magnetic detection, RF detection, mechanical detection or optical detection.
In yet further embodiments, a plurality of different electrical contact features 130, each having a different electrically detectable characteristic relative to the others, are provided on the cap 4 (or base/reservoir/cap unit) at respectively different predefined locations relative to each other. In such embodiments, a different respective electrical contact feature 130 on the cap (or base/reservoir/cap unit) is aligned with the electrical contact feature 132 in the reservoir receptacle 32 at different respective positions of the cap 4 (or base/reservoir/cap unit) within the reservoir receptacle 32. Accordingly, the electronics 60 may be configured to determine the position of the cap 4 (or base/reservoir/cap unit) relative to the reservoir receptacle 32, based on the particular electrical connection(s) (short(s)) or disconnection(s) (break(s)) detected as the cap 4 (or base/reservoir/cap unit) is moved relative to the reservoir receptacle 32
In particular embodiments, each different predefined characteristic of the cap 1, base/reservoir/cap unit, reservoir 1, infusion set 50 or connection interface 40, is associated (for example, on a one-to-one basis or other predefined association) with a respectively different predefined detectable location, pattern of locations, or other detectable characteristic or parameter of the electrical contact feature(s) 130. In those embodiments, the processing electronics 62 are configured to determine a characteristic of the cap 4, base/reservoir/cap unit, reservoir 1, infusion set 50 or connection interface 40 from the signals received from the sensor 34 connected with the electrical contact feature(s) 132.
For example, the processing electronics 62 may be configured to compare information received from one or more sensors 34 with information stored in a table or in another suitable data arrangement. The table or other data arrangement is stored in the electronic memory 66. The table or other data arrangement associates a plurality of different predefined electrically detectable characteristics or parameters, or locations or patterns of locations of one or more electrical contact feature(s) 130, or any combination thereof with a corresponding plurality of predefined characteristics of the cap 4, base/reservoir/cap unit, reservoir 1, infusion set 50 or connection interface 40.
In particular embodiments, based on one or more of the characteristics or parameters detected from the electrical contact feature 130, the processing electronics 62 is further configured to determine corresponding characteristics (for example, using a process 150 as described with respect to
In further embodiments, one or more wireless or wired communication devices is provided on the infusion pump device 30 (or other delivery device) and is configured and controlled to transmit volume information relating to the volume of infusion fluid remaining in or dispensed from the reservoir 1 (or other information corresponding to detected parameters of the one or more electrical contact detectable elements or associated characteristics) for display on another electronic device separate from or located remote from the infusion pump device 30. In particular embodiments, the wireless communication device(s) are configured to connect for communication on a communication network (such as, but not limited to the Internet), with one or more pre-defined network connected devices. Such one or more pre-defined network connected devices may be located at remote geographic locations relative to the infusion pump device 30 (or other delivery device). In particular embodiments, such network connected devices include a server configured to receive information from the infusion pump device 30 (or other delivery device) or from another network connected device (such as a cradle, user computer, or the like) that communicates with the infusion pump device 30 (or other delivery device). Such information may include, but is not limited to information corresponding to one or more detected parameters or one or more associated characteristics, or other information regarding the reservoir 1, cap 4, base/reservoir/cap unit or infusion set as described above.
In such embodiments, the network connected server may be associated with an entity that records information, supplies associated products such as refills or replacement parts, provides medical treatment or medical insurance to the user or the like. In one example, the network connected server is associated with the Carelink™ system of Medtronic Inc. In other embodiments, the network connected server is one or more other servers and associated entities. Accordingly, such information may be employed by the server (or associated entity) to determine whether or not (or when) to send refills, new or replacement reservoirs, caps, infusion set needle housings, infusion set tubing, or other components of the cap 4, base/reservoir/cap unit, or infusion set. In further embodiments, such information may be provided to the user's doctor or other medical treatment entity associated with the user (for tracking, diagnosing, adjusting treatment plans or other suitable uses). Thus, in such embodiments, refills or replacement components may be sent to users, automatically (without requiring the user to place an order), and usage information can be provided to the user's healthcare provider, insurance provider or other suitable entities, automatically.
In further embodiments, the network connected server is configured to provide (and the infusion pump device 30 or other delivery device is configured to receive) information through the above-noted network communication connection or other network connection. Such information may include, but is not limited to, instructions or recommendations for replacing or refilling a reservoir 1, cap 4, base/reservoir/cap unit or infusion set, messages or notices from healthcare providers, insurance carriers or manufacturers, recall notices or the like. In particular embodiments, electronics (such as electronics 60) in the infusion pump device 30 (or other delivery device) is configured to perform one or more predefined actions (as discussed above) in response to receipt of a predefined instruction, notice or message.
Another example embodiment of electrical contact detection configuration is shown in
The first electrical contact features 161 and 162 are arranged to engage and make electrical contact with a pair of second electrical contact feature 163 and 164 on the infusion pump device 30, when the cap 4 (or base/reservoir/cap unit) is installed in the reservoir receptacle of the infusion pump device 32. However, the second electrical contact features 163 and 164 are arranged at a location on the housing 33 of the infusion pump device 30, external to the reservoir receptacle 32. Accordingly, the first and second contact features 161-164 engage with each other, outside of the reservoir receptacle 32, when the cap 4 (or base/reservoir/cap unit) is installed in the reservoir receptacle of the infusion pump device 32.
In the embodiment in
In the embodiment in
In particular embodiments, the first electrical contact features 161 and 162 are arranged to engage and make electrical contact with a pair of second electrical contact feature 163 and 164, when the cap 4 (or base/reservoir/cap unit) is in a fully and properly installed position within the reservoir receptacle 32 of the infusion pump device 30, but do not engage and make electrical contact with a pair of second electrical contact feature 163 and 164, when the cap 4 (or base/reservoir/cap unit) is not in a fully and properly installed position within the reservoir receptacle 32. More specifically, when the cap 4 (or base/reservoir/cap unit) is fully and properly installed, the one first electrical contact feature 161 is arranged to engage one second electrical contact feature 163, while the other first electrical contact feature 162 is arranged to engage the other second electrical contact feature 164. In this manner, an electrical contact between the first and second pairs of electrical contact features is made, only when the cap 4 (or base/reservoir/cap unit) is in a fully and properly installed position within the reservoir receptacle 32.
In particular embodiments, the first and second electrical contact features 161-164 may be configured and operate similar to the first and second contact features 130 and 132 described above. In further embodiments, the first electrical contact features are part of (or are electrically connected with) electrical terminals of an electronic circuit such as, but not limited to an integrated circuit (IC) chip 168, carried by the cap 4. In such embodiments, the IC chip 168 includes an EPROM, ROM, PROM or other suitable electronic storage device that stores electronic data and/or programming. In such embodiments, electronics within the infusion pump device 30 (e.g., electrical circuit 170 described below and/or electrical circuit 60 described above with respect to
Data stored on or written to the electronic storage device (e.g., the IC chip 168) may include any suitable data, such as, but not limited to data associated with one or more characteristics of the cap 4 (or other component of the base/reservoir/cap unit, or the infusion set, infusion pump device 30 or user), including, but not limited to one or more of: a type or identity of a manufacturer of the reservoir, cap or infusion pump device; a size of the reservoir, cap or infusion pump device; a type or concentration of infusion media in the reservoir; a volume amount of infusion media in the reservoir; a date corresponding to a manufacturing date, expiration date or fill date related to infusion media in the reservoir; a date corresponding to a manufacturing date or expiration date of the reservoir, cap or infusion pump device; a location corresponding to a place where the reservoir or infusion media in the reservoir was made, filled, or otherwise processed; a location corresponding to a place where the cap or infusion pump device was made, assembled or otherwise processed; a location corresponding to a place where the reservoir, infusion media in the reservoir, cap or infusion pump device is authorized to be used; a lot number or code associated with a batch in which the reservoir, cap, infusion pump device or infusion media was made, cleaned, filled or otherwise processed; a serial number; a unique ID; user identification information for authorized users.
In the embodiment in
In particular embodiments, the electrical circuit 170 includes a controller circuit, such as, but not limited to a microcontroller (μc) 172 and a resistor circuit and/or other circuit components. Also in particular embodiments, the electrical circuit 170 may be provided on a printed circuit board assembly (PCBA) 174 located within the housing 33 of the infusion pump device 30.
The first and second electrical contact features 161-164 may be formed as pads of metal or other electrically conductive material. In other embodiments, the first electrical contact features 161 and 162, or the second electrical contact features 163 and 164 (or each of the first and second electrical contact features 161-164) may include an electrically conductive member that is spring biased or otherwise supported for movement against a bias force, such as, but not limited to a pogo connector, spring biased connector or the like. In such embodiments, one or both of the pair of first electrical contact features 161-162 and the pair of second electrical contact features 163-164 are arranged to press against the other pair of the first or second electrical contact features and move against the bias force (e.g., spring force), such that the first and second electrical contact features are positively engaged with each other, by the bias force, when the cap 4 (or base/reservoir/cap unit) is in a fully and properly installed position within the reservoir receptacle 32. In other embodiments, other suitable electrical connectors may be employed with or for the first and second electrical contact features 161-164, including, but not limited to snap connectors that snap together and make electrical contact, slide connectors that slide together to make electrical contact, or the like.
In further embodiments, one or more additional electrical contact features 165 is located on the cap 4 (or other portion of the base/reservoir/cap unit) for electrical contact with one or more additional electrical contact features 167 on the infusion pump device 30, within the reservoir receptacle 32 of the infusion pump device 30, when the cap 4 (or base/reservoir/cap unit) is fully and properly installed in the reservoir receptacle 32. The additional electrical contact 167 on the infusion pump device 30 may be electrically connected to the microcontroller 172 (or other portion of the electronics 170) through one or more electrical leads 169. In such embodiments, the electronics (such as electrical circuit 170 and/or electrical circuit 60 described above with respect to
In particular embodiments, the second electrical contact features 163 and 164 are mounted on the housing 33 of the infusion pump device 30 and sealed with respect to the housing 33 in a manner that inhibits leakage of fluid (water or other fluid) through the housing 33. In such embodiments, the infusion pump device 30 may be configured for use in damp conditions or, in further embodiments, in certain submerged or underwater environments. For example, embodiments may be configured for use in wet conditions (e.g., while the user is bathing, showering, or swimming), sea water or other salt water or ionic solution conditions, or high humidity or rain conditions. In such embodiments, a further reliable seal may be provided on the cap 4 (or base/reservoir/cap unit) or on the open end of the reservoir receptacle 32 of the infusion pump device 30, or both, to inhibit fluid from entering into the reservoir receptacle 32, when the cap 4 (or base/reservoir/cap unit is installed in the reservoir receptacle. Also in such embodiments, the rest of the housing 33 of the infusion pump device may be made to be sufficiently sealed or water-tight, to inhibit water from entering the housing 33. Thus, in particular embodiments, each of the electrical connections between electrical contact features on the cap 4 (or base/reservoir/cap unit) and contact features on the infusion pump device 30 are made outside of the reservoir receptacle 32 (e.g., via the pairs of first and second electrical contact features 161-164, where the second electrical contact features 163 and 164 are sealed with the housing 33 to inhibit passage of fluid through the contact features).
In particular embodiments, the electronics (such as electrical circuit 170 and/or electrical circuit 60 described above with respect to
The electronics in the infusion pump device (such as electrical circuit 170 and/or electrical circuit 60 described above with respect to
In embodiments that operate in accordance with Table 3, data may be read from or written to the electronic device (e.g., the IC chip 168) on the cap 4 (or base/reservoir/cap unit), when the infusion pump device (and connected cap 4 or base/reservoir/cap unit) are in a dry environment, for example, to system setup or other activities that typically occur in dry environments. For example, data relating to the model number, cannula length, infusion set tubing length or other characteristics as described herein may be read from the electronic device (e.g., the IC chip 168) on the cap 4 (or base/reservoir/cap unit) in a dry environment, to assist with initial or updated settings of the infusion pump device to allow proper priming or filing of the infusion set tubing and cannula and conduct other operations. Then, at a later time, the infusion pump device may be located in a wet (or ionic solution) environment that could inhibit accurate reading and writing date from or to the electronic device on the cap 4 (or base/reservoir/cap unit), yet still detect the presence of the cap 4 (or base/reservoir/cap unit) and continue to operate as previously set (initially or by update) if the presence of the cap 4 (or base/reservoir/cap unit) is detected. In particular embodiments, upon detection of a wet (or ionic solution) environment, the electronics (such as electrical circuit 170 and/or electrical circuit 60 described above with respect to
An example of a circuit configuration for detecting a wet (or ionic solution) condition is shown in
Another example of a circuit configuration that further operates to detect the attachment or detachment of a cap 4 (or base/reservoir/cap unit) to the infusion pump device 30 is shown in
In embodiments as described above, the connection interface 40 is configured to connect and interface the reservoir 1 with the infusion set 50 and with the infusion pump device 30, using releasable couplers including a first releasable coupler that removably attaches the cap 4 to the base 2 (and, thus, to the reservoir 1) and a second releasable couple that removably attaches the cap 4 to the infusion pump device 30. In particular examples of such embodiments, the cap 4 may be configured to allow the cap 4 to be selectively and manually connected and disconnected from a reservoir 1 and an infusion pump device 30, for example, to allow the reservoir 1 to be stored, shipped, sold, or otherwise provided to a user (or healthcare provider or other authorized person), separate and independent of the infusion pump device, the connection interface 40 and the infusion set 50, and then connected with the cap 4 and infusion pump device by the user (or healthcare provider or other authorized person).
In further examples of such embodiments, the releasable couplers may be configured to allow the user (or healthcare provider or other authorized person) to replace a first reservoir 1 with a second reservoir 1 (or a re-filled first reservoir 1) and continue to use the same connection interface 40, by allowing the cap 4 to be disconnected from the first reservoir 1 and reconnected to the second reservoir 1 (or re-filled first reservoir 1). For example, the first reservoir 1 may be removed from the reservoir receptacle 32 of the infusion pump device 30 (e.g., after the first reservoir 1 is fully or partially empty or otherwise ready for replacement), the cap 4 (or the cap 4 and base 2) is removed from the first reservoir 1 and then connected to a second reservoir 1. The second reservoir 1 is, then, installed in the reservoir receptacle 32 of the infusion pump device 30. In this manner, the reservoir 1 may be replaced, while the infusion set 50 remains secured to a patient (without withdrawing the needle 56 from the patient's skin).
In other embodiments as described with reference to
In particular embodiments, the reservoirs 201 and 301 and infusion sets 250 and 350 correspond to (and operate similar to) the reservoir 1 and infusion set 50 described above, and are employed with an infusion pump device 30 in a manner as described herein. However, in the embodiments described with reference to
Embodiments described with reference to
a. Twist and Lock Embodiment
Embodiments described with reference to
In the embodiment in
When the infusion media ports of the reservoir 201 and the supply container 203 are received in the cavities at the first and second ends of the transfer guard 200, one or more hollow needles in the transfer guard 200 connect the interior volume of the supply container in fluid flow communication with the interior volume of the reservoir 201. In that state, the reservoir piston may be withdrawn (pulled outward relative to the body of the reservoir 201), to create a sufficient pressure differential between the interior of the reservoir 201 and the interior of the supply container, to draw infusion media from the supply container, through the hollow needle(s) and into the reservoir 201.
Once the reservoir 201 is sufficiently filled, the supply container 203 may be removed from the second end 206 of the transfer guard 200. Alternatively or in addition, the first end 205 of the transfer guard 200 may be removed from the reservoir 201, for example by rotating the transfer guard 200 about the axis AA relative to the reservoir 201 and then pulling the transfer guard 200 and reservoir 201 apart along the direction of the axis AA, as described below. The axis AA corresponds to the longitudinal axis of the reservoir 201, as well as the longitudinal axis of the container 203 and of the transfer guard 200, when the container 203 and transfer guard 200 are connected to the port of the reservoir 201 in the arrangement shown in
A cap 204 that connects to the infusion media port of the reservoir 201, and is rotatable around the axis AA relative to the reservoir 201 when connected to the port of the reservoir 201. As described herein, when connected to the reservoir 201, the cap 204 is rotatable at least to and between a first position (or fill position) as shown in
In the embodiment of
In particular embodiments, the cap 204 or the port of the reservoir 201 (or both) is made of a material that has sufficient rigidity to secure the cap 204 to the reservoir 201 when the rib(s) 210 is in the groove(s) 212, but is sufficiently flexible and resilient to allow the cap 204 to be snapped into the port of the reservoir 201. In such embodiments, during assembly, the cylindrical portion 208 is configured to be inserted into the port of the reservoir 201 and pushed along the direction of the axis AA, causing the rib(s) 210 to ride along and partially compress against the inner surface of the port of the reservoir 201, until the rib(s) 210 engage the groove(s) 212 in the port of the reservoir 201 and then expand from their compressed state to fill or partially fill the groove(s) 212. In particular embodiments, the cap 204 is configured to provide a snap sound or snap-like feel that is perceptible to a person assembling the cap 204 with the reservoir 201, when the rib(s) 210 engage the groove(s) 212. Once snapped into place, the rib(s) 210 can ride within the groove(s) 212 to allow the cap 204 to rotate around the axis AA relative to the reservoir 201, while remaining connected to the reservoir 201.
In embodiments shown in
A channel 214 extends through the cylindrical portion 208 of the cap 204, along the direction of the axis AA. The channel 214 is open on both ends 216 and 217. However, the channel 214 is sealed by a septum 118 that is held by the cap 204, adjacent the end 216. In the embodiment in
The channel 214 has an opening 220 at a location along its longitudinal dimension, between the first and second ends 216 and 217 of the channel 214. The opening 220 is arranged to align in fluid flow communication with an open end 221 of a further channel 222 in the port of the reservoir 201, when the cap 204 is connected to the reservoir and the cap 204 is rotated to the second position (or deliver position) as shown in
The channel 222 in the port of the reservoir 201 has a longitudinal dimension that extends in a direction transverse to the longitudinal dimension of the channel 214 and the axis AA when the cap 204 is connected to the reservoir 201. In the embodiment in
In particular embodiments, the open end 221 of the channel 222 is sealed by the cap 204 to inhibit the passage of fluid into or out of the channel 222, when the cap is in the first position (or other positions between the first and second position). In one example, the outer surface of the cylindrical portion 208 of the cap 204 is configured to fit sufficiently closely with the inner surface of the port of the reservoir 201 to seal the open end 221 of the channel 222, when the cap 204 is in the first position (or other positions between the first and second position). In further examples, one or more seals or seal material is arranged on the outer surface of the cylindrical portion 208 of the cap 204, to seal the open end 221 of the channel 222, when the cap 204 is in the first position (or other positions between the first and second position).
The cap 204 includes one or more extension arms 224 that extend over the port end of the reservoir 201, when the cap 204 is connected to the reservoir 201. In the embodiment of
The port of the reservoir 201 also includes one or more extension arms 226 that extend outward and transverse to the axis AA. In the embodiment of
In particular embodiments, the cap 204 or the port of the reservoir 201 (or both) are provided with a latch or other structure that locks the cap 204 in the second position (or deliver position), after the cap 204 has been rotated to the second position. In the embodiment in
The stop members 230 are arranged on that end surface of the port of the reservoir 201, to engage the flexible pawls 228, as the cap 204 is rotated in the first direction between the first position (or fill position) and the second position (or deliver position). As the cap 204 is rotated from the first position (or fill position) toward the second position (or deliver position), the flexible pawls 228 engage and slide along the stop members 230. The engagement with the stop members 230 causes the flexible pawls 228 to flex inward toward the axis AA as they ride along the stop members 230. As the cap 204 is rotated to the second position (or deliver position), the flexible pawls 228 are moved past the stop members 230 and flex back outward, away from the axis AA, due to their natural resilience.
In particular embodiments, the stop members 230 are shaped or otherwise configured to inhibit rotation of the cap 204 out of the second position (or deliver position), once the cap 204 has been rotated to that position. In the embodiment of
In the embodiment of
In the embodiment of
With the port of the reservoir received within the first end 205 of the transfer guard 200 and the cap 204 in the first position (or fill position), a supply container that contains a supply of infusion media may be received in the cavity in the second end 206 of the transfer guard 200. In particular embodiments, the reservoir/infusion-set/transfer-guard unit is provided to a user (or healthcare provider or other authorized person) in a pre-assembled state, but without a supply container connected to the transfer guard 200. In such embodiments, the reservoir 201 may be filled (partially or fully) before installation in an infusion pump device, by installing a supply container in the second end 206 of the transfer guard 200 and withdrawing (partially or fully) the piston in the reservoir 201 to draw a desired volume of infusion media fluid from the supply container, through the transfer guard needle(s), and into the reservoir 201. Once the reservoir 201 has received the desired volume of infusion media fluid, the user (or healthcare provider or other authorized person) releases the reservoir 201 from the transfer guard 200 and installs the reservoir 201 into the reservoir receptacle 32 of the infusion pump device 30, for operation as described above.
In particular embodiments, to release the reservoir 201 from the transfer guard, the user (or healthcare provider or other authorized person) rotates one of the transfer guard 200 and reservoir 201 relative to the other in a first direction (for example, the clockwise in the embodiment of
When the cap 204 reaches the second position (or deliver position), the arms 224 are aligned with (adjacent and directly on top of) the extension arms 226 on the port of the reservoir 201. In addition, the aligned arms 224 and 226 are aligned with the slots 234 in the transfer guard. In that state, the reservoir 201 may be withdrawn from the transfer guard 200, by manually separating the reservoir 201 from the transfer guard 200 in the direction of the axis AA, as shown by the arrow in
Accordingly, in particular embodiments, the reservoir/infusion-set/transfer-guard unit is provided with the cap 204 in a first position (or fill position) in which the fluid pathway to the infusion set 250 is closed, to prevent introduction of air. In that state, a supply container may be connected to the transfer guard 200 to fill (partially or fully) the reservoir 201. Once the reservoir is filled to a desired level, the transfer guard is used to assist rotation of the cap 204 to the second position (or deliver position), in which the fluid pathway to the infusion set 250 is opened to the interior of the reservoir 201. In particular embodiments, the cap 204 is latched or locked into the second position (or deliver position), once it is rotated to that position. In that state, the reservoir 201 is removed from the transfer guard 200 and is installed in the reservoir receptacle 32 of the infusion pump 30 for operation as described above.
Embodiments described with reference to
In particular examples of such embodiments, one or more detectable elements is arranged on one or more extension arms 224 of the cap 204, and one or more corresponding sensors is arranged on the infusion pump device 30 at locations to detect whether or not the extension arm 224 has been sufficiently rotated to the second position (or deliver position). In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, upon the detection of an extension arm 224 that is not sufficiently rotated to the second position (or deliver position), where such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, or recording data indicating the detection. Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) a determination that the extension arm 224 is properly rotated to the second position, where such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
b. Spring-Loaded Plunger
Embodiments described with reference to
In the embodiment of
The neck portion 307 of the reservoir 301 includes a channel 316 that is open on one end to the interior volume of the neck portion 307 and is connected at its other end to tubing 352 of an infusion set 350. In particular embodiments, the tubing 352 is connected to the reservoir 301 (at the channel 316) permanently or other manner in which the connection is maintained. The infusion set 350 and tubing 352 may be similar to the infusion set 50 or 250 and tubing 52 or 252 described above.
The neck portion 307 of the reservoir 301 also includes one or more first projections or other stop surfaces 318 and one or more second stop surfaces 320 arranged to hold the moveable plunger 312 within the interior volume of the neck portion 307. In particular embodiments, the first projection or stop surface 318 includes a ring-shaped projection arranged at or adjacent the bottom of the neck portion 307 (where the interior volume of the neck portion 307 opens into the rest of the interior volume of the reservoir). In particular embodiments, the second projection or stop surface 320 includes a ring-shaped projection arranged at or adjacent the reservoir port or top of the neck portion 307 (where the interior volume of the neck portion 307 opens to the environment outside of the reservoir). In particular embodiments, the first and second projections or stop surfaces 318 and 320 are formed integral with the body of the reservoir 301, for example, as a unitary molded structure. In other embodiments, the one or both of the first and second projections or stop surfaces 318 and 320 is formed as a separate element that is fixed to the reservoir 301.
In the embodiment in
Similar to embodiments described above, the reservoir 301, infusion set 350 and transfer guard 300 in the embodiment of
When the transfer guard 300 is assembled with the reservoir 301, the port portion of the reservoir 301 is received within a cavity at the first end 305 of the transfer guard 300, and the transfer guard needle 306 is received within the open end of the port of the reservoir 301, as shown in
In the first position (or fill position), the cylindrical outer surface of the plunger 312 is aligned with the open end of the channel 316, to block fluid flow to or from the channel 316, to seal the channel 316. However, the flow passages 326 in the plunger 312 allow fluid to pass through the plunger 312, and into the interior volume of the reservoir 301. Accordingly, in the first position (or fill position) shown in
In one example, the outer surface of the plunger 312 is configured to fit sufficiently closely with the inner surface of the neck of the reservoir 201 to seal the open end of the channel 316, when the plunger 312 is in the first position. In further examples, one or more seals or seal material is arranged on the outer cylindrical surface of the plunger 316, to seal the open end of the channel 316, when the plunger 316 is in the first position. In such embodiments, the one or more seals or seal material may include, for example, but not limited to, a silicone or soft plastic or rubber material affixed to the outer cylindrical surface of the plunger 316, at a location to align with and block or seal against the open end of the channel 316.
After filling of the reservoir 301, the port end of the reservoir 301 is removed from the transfer guard 300, so that the reservoir 301 may be installed within a reservoir receptacle 32 of an infusion pump device 30 as described above. Upon removal of the reservoir 301 from the transfer guard 300, the transfer guard needle 306 is withdrawn from the port of the reservoir 301. This allows the moveable plunger 312 to move, under the force of the bias member 314 toward its second position (or deliver position) shown in
In the second position (or deliver position), the plunger 312 is separated from the open end of the channel 316, to allow fluid flow communication between the channel 316 and the interior of the reservoir 301. As a result, the infusion set tubing 352 of the infusion set 350 is in flow communication with the interior of the reservoir, to allow fluid delivery. In this state, the reservoir 301 may be installed in the reservoir receptacle 32 of an infusion pump device 30 and operated as described above.
Accordingly, in the embodiment of
In further examples of the embodiments of
Embodiments described with reference to
In particular examples of such embodiments, one or more corresponding sensors is arranged on the infusion pump device 30 at locations to detect whether or not the plunger 312 has moved to the second position (or deliver position). In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, upon the detection that the plunger 312 has not sufficiently moved to the second position (or deliver position), where such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, or recording data indicating the detection. Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) a determination that the plunger 312 has sufficiently moved to the second position (or deliver position), where such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
4. Mechanical Interface of Cap or Reservoir with Pump
As described above, the second releasable coupler releasably secures the cap 4 (or base/reservoir/cap unit) to the housing of the infusion pump device 30, when the base/reservoir/cap unit is received in the reservoir receptacle 32 of the infusion pump device 30. In the embodiment of
In other embodiments, the second releasable coupler includes other suitable coupling structures for coupling the cap 4 to the infusion pump device 30 in a selectively releasable manner, such as, but not limited to the coupling structures described with reference to
Embodiments described with reference to
a. Push-Fit, Pinch Release on Cap
In particular embodiments, the second releasable coupler includes one or more resilient extensions that engage stop surfaces in the reservoir receptacle 32 to retain the cap (or base/reservoir/cap unit) within the reservoir receptacle. The one or more resilient extensions are flexible to selectively disengage the stop surfaces sufficiently to allow removal of the cap (or base/reservoir/cap unit) from the reservoir receptacle 32.
For example, in the embodiment described with reference to
In the embodiment of
The cap 404 includes a port 408 for connection with an infusion set tubing such as, but not limited to, an infusion set tubing 52 of an infusion set 50 as described above. The cap 404 also includes a body portion 407 through which a channel 409 extends. The channel 409 connects to a hollow needle (not shown) similar to needle 9 described above, and provides a fluid flow communication path from the hollow needle to the port 408 (and to an infusion set tubing, when connected to the port 408). The cap 404 also includes one or more connection features (of the first releasable coupler) for coupling the cap 404 to a reservoir (or to a base/reservoir unit). In the embodiment in
The cap 404 may be made of any one or more suitable materials having sufficient rigidity and strength to operate as described herein, including, but not limited to plastic, metal, ceramic, composite or other suitable material. In one example, the cap 404 (including the resilient extensions 406, body 407 and port 408) is made of a molded plastic material, as a single, unitary, molded structure. In other embodiments, the cap 404 may be made by other processes or in multiple parts that are assembled together (or both).
In the embodiment shown in
The channel 35 defines a lip portion 37 around the rim of the open end of the reservoir receptacle 32, where the channel 35 and the lip portion 37 have a first stop surface 35a (the downward-facing surface of the channel 35 in
In particular embodiments, the cap 404 is provided to the user (or medical technician or other authorized person) either separate from or connected to a reservoir 1. If received separately, the user (or medical technician or other authorized person) assembles the cap 404 with the reservoir 1 (or with the base 2 and reservoir 1 to form a base/reservoir/cap unit) as described above.
Once assembled, the base/reservoir/cap unit is inserted into the reservoir receptacle 32, along the direction of the axis A. In particular embodiments, while inserting the base/reservoir/cap unit into the reservoir receptacle 32, the user (or medical technician or other authorized person) squeezes the extensions 406 inward in the radial direction, toward each other (or toward the axis A). With the extensions 406 squeezed inward sufficient to allow the engagement portions 406a to clear the lip 37 of the port of the reservoir receptacle 32, the user (or medical technician or other authorized person) inserts the base/reservoir/cap unit into the reservoir receptacle 32. Once the engagement portions 406a are inserted past the lip 37, the user (or medical technician or other authorized person) releases the squeezing force on the extensions 406, to allow the extensions 406 to move back outward in the radial direction toward their pre-squeezed state.
As the extensions 406 return toward their pre-squeezed state, the engagement portions 406a move outward in a radial direction relative to the axis A to engage the inner surface of the reservoir receptacle 32. Then, if needed, the user (or medical technician or other authorized person) can make adjustments to the position of the cap 404 in the direction of the axis A to align the engagement portions 406a with the channel 35, to allow the engagement portions to be received within the channel 35. As the engagement portions 406a align with the channel 35, the resilient return force of the extensions 406 causes the engagement portions 406a to move into the channel 35 and lock the cap 404 (and base/reservoir/cap unit) to the reservoir receptacle 32 of the infusion pump device 30.
Thus, in particular embodiments, the user (or medical technician or other authorized person) squeezes the extensions 406 toward each other when inserting the cap 404 (or base/reservoir/cap unit) into the reservoir receptacle 32. In other embodiments, the engagement portions 406a are shaped to allow the user (or medical technician or other authorized person) to insert the cap 404 (or base/reservoir/cap unit) into the reservoir receptacle 32 without the user also applying a separate squeezing force on the extensions 406. For example, in such embodiments, the engagement portions 406a may be rounded or angled at their tip, to allow the movement of the cap 404 (or base/reservoir/cap unit) along the axis A into the reservoir receptacle 32 to force the extensions toward each other.
In particular embodiments, the resilient return force of the extensions 406 and the shape of the engagement portions 406a are configured to provide a snap-fit action between the engagement portions 406a and the channel 35. In such embodiments, the extensions 406 and the shape of the engagement portions 406a are configured to provide an audible or tactile (or both) snap sound or feel (or both) that is perceptible to the user (or medical technician or other authorized person) as the user (or medical technician or other authorized person) inserts the cap 404 (or base/reservoir/cap unit) into the reservoir receptacle 32. The snap-fit action provides the user (or medical technician or other authorized person) with an audible or tactile (or both) indication that the cap 404 (or base/reservoir/cap unit) has been sufficiently or properly received within the reservoir receptacle 32.
The cap 404 (or base/reservoir/cap unit) may be removed from the reservoir receptacle 32 by squeezing the two extensions 406 toward each other to withdraw the engagement portions 806a from the channel 35 by a sufficient amount to allow the user to pull the cap 404 (or base/reservoir/cap unit) out of the reservoir receptacle 32. With the extensions 406 squeezed toward each other, the user (or medical technician or other authorized person) pulls the cap 404 (or base/reservoir/cap unit) in the direction of the axis A, out of the reservoir receptacle 32. In particular embodiments, no twisting or rotational motion on the cap 404 is needed to remove the cap 404 (or base/reservoir/cap unit) from the reservoir receptacle 32.
In the embodiment of
In particular embodiments, the reservoir receptacle 32 of the infusion pump device 30 includes a spring or other bias member that imparts a bias force on the cap 404 or the reservoir 1 in the direction of the axis A and outward from the reservoir receptacle 32, when the base/reservoir/cap unit is installed in the reservoir receptacle 32. In one example embodiment, the infusion pump device 30 includes a coil spring located at the bottom of the reservoir receptacle 32, to impart a bias force on the reservoir 1 and the cap 404 in the upward direction with respect to
In the embodiment shown in
In various embodiments described above, the resilient extensions 406 are formed integral with the body 407 of the cap 404 and are made of a material having a natural flexibility and resilience. In other embodiments, the extensions 406 are separate members that are attached to the body 407 of the cap 404 with resilient connectors, such as, but not limited to springs or material having a natural spring force.
In the embodiment of
Embodiments described with reference to
In particular examples of such embodiments, one or more detectable elements 42 is provided on one or each extension 406. For example, one or more detectable elements 42 may be provided on the engagement portion 406a of one or more of the extensions 406. In such embodiments, one or more corresponding sensors is arranged on the infusion pump device 30 at locations to detect whether or not the extensions 406 (or engagement portions 406a) is located in a proper position, for example, within the channel 35. In other embodiments, the sensor(s) are arranged to detect other possible positions of the extension 406 (or engagement portion 406a) within the reservoir receptacle 32.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, upon the detection of an extensions 406 (or engagement portions 406a) that is not in a proper location (for example, upon detection of an engagement portion 406a that is outside of or not sufficiently located within the channel 35. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, or recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) a determination that an extensions 406 (or engagement portions 406a) is in a proper location (for example, upon detection of an engagement portion 406a that is sufficiently located within the channel 35). Such predefined operations include, but are not limited to one or more of allowing or continuing pumping operation, allowing a limited pumping operation, providing a predefined message, or recording data indicating the detection.
b. Push-Fit with Oblong Ring Release
In other embodiments, the second releasable coupler includes one or more moveable or resilient (or both) ring-shaped members on or in the housing of the infusion pump device 30 that engage one or more corresponding grooves or stop surfaces in or on the cap (or other portion of the base/reservoir/cap unit), when the cap (or base/reservoir/cap unit) is installed within the reservoir receptacle 32 of the infusion pump device 30. When engaged with the groove(s) or stop surface(s), the ring-shaped member(s) lock the cap (or other portion of the base/reservoir/cap unit) in a predefined position within the reservoir receptacle 32, and inhibit removal of the cap (or other portion of the base/reservoir/cap unit) from the predefined position within the reservoir receptacle 32.
The ring shaped member(s) include or are connected with one or more buttons or other interface on the outside of the housing of the infusion pump device 30. The button(s) or other interface(s) are configured to be selectively operated by a user (or medical technician or other authorized person) to selectively expand the ring-shaped member in at least one dimension. The expansion of the ring-shaped member releases the cap (or other portion of the base/reservoir/cap unit) from the locked state and allows the user (or medical technician or other authorized person) to remove the cap (or other portion of the base/reservoir/cap unit) from the reservoir receptacle. In particular embodiments, the ring-shaped member is also expanded to install a cap (or other portion of the base/reservoir/cap unit) in the reservoir receptacle 32 of the infusion pump device 30.
For example, in the embodiment described with reference to
An example of a cap 504 is shown in
The ring member 502 includes an annular, ring portion 503, an anchor portion 506, and a button portion 508. The ring portion 503 has an inner opening 510, and is arranged within or over the reservoir receptacle 32 with axis A of the reservoir receptacle 32 extending through the inner opening 510. In particular embodiments, the ring member 502 is held by a portion of the housing of the infusion pump device 30, in the region of the reservoir receptacle 32, with a central point or axis of the ring portion 503 arranged at or near (or coaxial with) the axis A of the reservoir receptacle 32. The button portion 508 of the ring member 502 extends through an opening or slot in housing of the infusion pump device 30, at the reservoir receptacle 32. The anchor portion 506 of the ring member 502 is received within a receptacle opening, slot, or indentation within the housing of the infusion pump device 30, at the reservoir receptacle 32. In the embodiment in
When the button portion 508 of the ring member 502 is not operated, the ring member 502 is in a first state (released state). In the first state (released state), the opening 510 in the ring portion 503 has a first width (or diameter) D1 in a first direction, where the first direction extends along the anchor portion 506 and the button portion 508. Also in the first state (released state), the opening 510 has a second width (or diameter) D2 in a second direction, where the second direction extends transverse to the first direction. In the embodiment in
When the button portion 508 of the ring member 502 is operated (for example, is pushed by a finger 511 of a user, healthcare provider or other authorized person), the ring member 502 is in a second state (expanded state). In the second state (expanded state), the second width (or diameter) D2′ of the opening 510 is expanded in a second direction relative to the second width (or diameter) D2 in the first state (released state). Also in the second state (expanded state), the first width (or diameter) D1′ of the opening 510 in the ring member 502 is reduced in a first direction relative to the first width (or diameter) D1 in the first state (released state).
The ring portion 503 is configured to be at least partially received within the groove 505 in the cap 504, when the cap 504 (or base/reservoir/cap unit) is installed in the reservoir receptacle 32 of the infusion pump device 30 and the ring member 502 is in the first state (released state). When received within the groove 505, the ring portion 503 inhibits removal of the cap 504 (or base/reservoir/cap unit) from the reservoir receptacle 32 of the infusion pump device 30. However, from the state shown in
In particular embodiments, the cap 504 includes a port for connection with an infusion set tubing such as, but not limited to, an infusion set tubing 52 of an infusion set 50 as described above. The cap 504 also includes a channel through the body portion 507 that connects to a hollow needle (not shown) similar to needle 9 described above, and provides a fluid flow communication path from the hollow needle to the port (and to an infusion set tubing, when connected to the port). The cap 504 also includes one or more connection features as described above for coupling the cap 504 to a reservoir (or to a base/reservoir unit). The cap 504 may be made of any one or more suitable materials having sufficient rigidity and strength to operate as described herein, including, but not limited to plastic, metal, ceramic, composite or other suitable material. In one example, the cap 504 is made of a molded plastic material, as a single, unitary, molded structure. In other embodiments, the cap 504 may be made by other processes or in multiple parts that are assembled together (or both).
In particular embodiments, the cap 504 is provided to the user (or medical technician or other authorized person) either separate from or connected to a reservoir 1. If received separately, the user (or medical technician or other authorized person) assembles the cap 504 with the reservoir 1 (or with the base 2 and reservoir 1 to form a base/reservoir/cap unit) as described above.
Once assembled, the base/reservoir/cap unit is inserted into the reservoir receptacle 32, along the direction of the axis AA. In particular embodiments, while inserting the base/reservoir/cap unit into the reservoir receptacle 32, the user (or medical technician or other authorized person) pushes the button portion 508 of the ring member 502 to expand the second diameter of the opening 510 from D2 to D2′. With the second diameter of the opening 510 expanded from D2 to D2′, the cap 504 (or base/reservoir/cap unit) can be inserted into the reservoir receptacle 32 and through the opening 510 in the ring member 502.
Once the cap 504 (or base/reservoir/cap unit) is inserted into the reservoir receptacle 32 a sufficient distance, the button portion 508 may be released to allow the ring member 502 to return toward the first state (released state), but with a portion of the body 507 of the cap 504 extending through the opening 510 of the ring member 502. In that position, a portion of the inner surface of the opening 510 of the ring member 502 abuts a portion of the outer surface of the body 507 of the cap 504. Then, if needed, the user (or medical technician or other authorized person) can make adjustments to the position of the cap 504 in the direction of the axis A to align the groove 505 with the ring member 502, to allow the ring portion 503 to be received within the groove 505. As the groove 505 aligns with the ring portion 503 of the ring member 502, the resilient return force of the ring member 502 causes the ring portion 503 to move into the groove 505 and lock the cap 504 (and base/reservoir/cap unit) to the reservoir receptacle 32 of the infusion pump device 30.
Thus, in particular embodiments, the user (or medical technician or other authorized person) pushes the button portion 508 when inserting the cap 504 (or base/reservoir/cap unit) into the reservoir receptacle 32. In other embodiments, the cap 504 (or base/reservoir/cap unit) is shaped to allow the user (or medical technician or other authorized person) to insert the cap 504 (or base/reservoir/cap unit) into the reservoir receptacle 32 without the user also pushing the button portion 508. For example, in such embodiments, the cap 504 (or base/reservoir/cap unit) may have an outer surface that is tapered to a smaller diameter toward the bottom end of the cap 504 (or base/reservoir/cap unit) relative to the upper end, such that the tapered outer surface engages the inner surface of the ring portion 503 and expands the ring portion 503 in the second direction as the cap 504 (or base/reservoir/cap unit) is moved further into the reservoir receptacle 32 in the direction of axis A.
In particular embodiments, the resilient return force of the ring member 502 and the shape of the groove 505 are configured to provide a snap-fit action between the ring member 502 and the groove 505. In such embodiments, the ring portion 503 and the groove 505 are configured to provide an audible or tactile (or both) snap sound or feel (or both) that is perceptible to the user (or medical technician or other authorized person) as the user (or medical technician or other authorized person) inserts the cap 504 (or base/reservoir/cap unit) into the reservoir receptacle 32. The snap-fit action provides the user (or medical technician or other authorized person) with an audible or tactile (or both) indication that the cap 504 (or base/reservoir/cap unit) has been sufficiently or properly received within the reservoir receptacle 32.
The cap 504 (or base/reservoir/cap unit) may be removed from the reservoir receptacle 32 by pushing the button 508 to expand the second width of the opening 510 from D2 to D2′, to withdraw the ring portion 503 from the groove 505 by a sufficient amount to allow the user to pull the cap 504 (or base/reservoir/cap unit) out of the reservoir receptacle 32. With the button portion 508 pushed, the user (or medical technician or other authorized person) pulls the cap 504 (or base/reservoir/cap unit) in the direction of the axis A, out of the reservoir receptacle 32. In particular embodiments, no twisting or rotational motion on the cap 504 is needed to remove the cap 504 (or base/reservoir/cap unit) from the reservoir receptacle 32.
In particular embodiments, the reservoir receptacle 32 of the infusion pump device 30 includes a spring or other bias member that imparts a bias force on the cap 504 or the reservoir 1 in the direction of the axis AA and outward from the reservoir receptacle 32, when the base/reservoir/cap unit is installed in the reservoir receptacle 32. In such embodiments, the spring or bias member may be similar to the spring or bias member described above with respect to the cap 404. The bias force causes a surface (lower surface in
In the embodiment shown in
In the embodiment of
The embodiment shown in
In the embodiment of
In the embodiment of
By releasing the button portion 514, the ring-shaped member 502 returns to its first state (released state), which causes the further button to be moved back to its initial (un-depressed) state. In other embodiments, the ramped or wedge-shaped surface is provided on the further button portion 514 at the interface of the further button portion 504 and the linkage structure 512. In yet further embodiments, both the linkage structure 512 and the further button portion 514 have ramped or wedge-shaped surfaces at their interface. In yet further embodiments, other suitable linkage structure for operatively connecting the further button portion 514 to the button portion 508 is employed.
Embodiments described with reference to
Alternatively or in addition, the ring shaped member 502 is provided with one or more detectable elements 42 described above. In embodiments that employ multiple ring-shaped members, a plurality of those ring-shaped members (or each of the multiple ring-shaped members) may be provided with one or more detectable elements described above. For example, one or more detectable elements 42 may be provided on the ring portion 503 or the button portion 508.
In such embodiments, the infusion pump device 30 may include one or more corresponding sensor elements 32 described above, arranged to detect the detectable elements 42, for example, when the ring-shaped member 502 is in one or more of the first state (released state) or second state (expanded state), to detect the position of the ring-shaped member relative to the housing of the infusion pump device 30. In further embodiments, the detectable element(s) 42 and sensor element(s) are arranged such that one or more sensor elements detect one or more detectable elements, if the ring portion 503 of the ring-shaped member is received within the groove 505 of the cap 504.
In further examples of such embodiments, one or more additional detectable elements 42 are provided on the cap 504 (or other portion of the base/reservoir/cap unit), and one or more further sensor elements 32 are arranged on the infusion pump device 30 to detect those detectable elements 42 if the cap 504 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32 of the infusion pump device 30 (or not properly received within the reservoir receptacle 32). Accordingly, the electronics 60 in those embodiments may be configured to determine whether or not the cap 504 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32 and properly engaged with the ring-shaped member 502, based at least in part on signals provided by sensor elements 32.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 504 (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the ring portion 503 of the ring-shaped member is not properly received within the groove 505 of the cap 504. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 504 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) a determination that the ring portion 503 of the ring-shaped member is received within the groove 505 of the cap 504. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
c. Push-Fit with U-Shaped Release
In other embodiments, the second releasable coupler includes one or more moveable U-shaped members on or in the housing of the infusion pump device 30 that engage one or more corresponding grooves or stop surfaces in or on the cap (or other portion of the base/reservoir/cap unit), when the cap (or base/reservoir/cap unit) is installed within the reservoir receptacle 32 of the infusion pump device 30. When engaged with the groove(s) or stop surface(s), the U-shaped member(s) lock the cap (or other portion of the base/reservoir/cap unit) in a predefined position within the reservoir receptacle 32, and inhibit removal of the cap (or other portion of the base/reservoir/cap unit) from the predefined position within the reservoir receptacle 32.
The U-shaped member(s) include or are connected with one or more buttons or other interface on the outside of the housing of the infusion pump device 30. The button(s) or other interface(s) are configured to be selectively operated by a user (or medical technician or other authorized person) to selectively move (slide, shift or otherwise move) the U-shaped member in at least one predefined direction. The movement of the U-shaped member in the predefined direction releases the cap (or other portion of the base/reservoir/cap unit) from the locked state and allows the user (or medical technician or other authorized person) to remove the cap (or other portion of the base/reservoir/cap unit) from the reservoir receptacle. In particular embodiments, the U-shaped member is also selectively moved (slid, shifted or otherwise moved) in the predefined direction to install a cap (or other portion of the base/reservoir/cap unit) in the reservoir receptacle 32 of the infusion pump device 30.
For example, an embodiment of a second releasable coupler that includes a U-shaped member 602 is described with reference to
In the embodiment of
The U-shaped member 602 includes a curved portion 603, a first generally linear portion 605 extending from one end of the curved portion 603, and a second generally linear portion 607 extending from a second end of the curved portion 603, where the combination of the curved portion 603 and first and second generally linear portions 605 and 607 form a U-shape. In other embodiments, the portions 605 and 607 are not linear and, instead, have a curvature along their respective length dimensions. The U-shaped member 602 also includes a button portion 608, connecting ends of the generally linear portions 605 and 607.
The U-shaped member 602 has an inner opening 610 located between the two generally linear portions 605 and 607 and between the curved portion 603 and the button portion 608. The U-shaped member is arranged on or in the reservoir receptacle 32 of the infusion pump device 30 (in a manner similar to the manner in which the ring-shaped member 502 is supported on or in the reservoir receptacle 32, as described above with respect to
In particular embodiments, the U-shaped member 602 is held by a portion of the housing of the infusion pump device 30, in the region of the reservoir receptacle 32, with a central point of the inner opening 610 arranged at or near (or coaxial with) the axis AA of the reservoir receptacle 32. The button portion 608 of the U-shaped member 602 extends through an opening or slot in housing of the infusion pump device 30, at the reservoir receptacle 32.
The U-shaped member 602 (including the button portion 608) is moveable between a first position (as shown in
The button portion 608 has a surface 608a located external to the housing of the infusion pump device, in the region of the reservoir receptacle. The surface 608a of the button portion 608 is arranged for receiving a manual force to overcome the force of the bias member 612 and selectively move the U-shaped member 602. Thus, for example, a user (or medical technician or other authorized person) may apply a manual force on the surface 608a of the button portion 608, to move the U-shaped member 602 from the first position (
When the button portion 608 is not operated, the U-shaped member 602 is in the first position. When the U-shaped member 602 is in the first position while a cap 504 (or base/reservoir/cap unit) is properly received in the reservoir receptacle 32, the curved portion 603 of the U-shaped member 602 engages the groove 505 of the cap 504 to inhibit movement of the cap 504 (and base/reservoir/cap unit) relative to the reservoir receptacle 32, in the direction of the axis AA. In particular embodiments, the curved portion 603 is configured to be at least partially received within the groove 505 in the cap 504, when the cap 504 (or base/reservoir/cap unit) is installed in the reservoir receptacle 32 of the infusion pump device 30 and the U-shaped member 602 is in the first position (
However, from the state shown in
As described above, the base/reservoir/cap unit is inserted into the reservoir receptacle 32, along the direction of the axis AA. In particular embodiments, while inserting the base/reservoir/cap unit into the reservoir receptacle 32, the user (or medical technician or other authorized person) pushes the button portion 608 of the U-shaped member 602 to move the U-shaped member 602 toward the second position (
Once the cap 504 (or base/reservoir/cap unit) is inserted into the reservoir receptacle 32 a sufficient distance, the button portion 608 may be released to allow the U-shaped member 602 to return toward the first state (released state), for example, via a return force from the bias member 612, but with a portion of the body 507 of the cap 504 extending through the opening 610 of the U-shaped member 602. In that position, a portion of the inner surface of the curved portion 603 in the opening 610 of the U-shaped member 602 abuts and presses against a portion of the outer surface of the body 507 of the cap 504. Then, if needed, the user (or medical technician or other authorized person) can make adjustments to the position of the cap 504 in the direction of the axis A to align the groove 505 with the curved portion 603 of the U-shaped member 602, to allow the curved portion 603 to be received within the groove 505. As the groove 505 aligns with the curved portion 603 of the U-shaped member 602, the resilient return force of the curved portion 603 causes the curved portion 603 to move into the groove 505 and lock the cap 504 (and base/reservoir/cap unit) to the reservoir receptacle 32 of the infusion pump device 30.
Thus, in particular embodiments, the user (or medical technician or other authorized person) pushes the button portion 608 when inserting the cap 504 (or base/reservoir/cap unit) into the reservoir receptacle 32. In other embodiments, the cap 604 (or base/reservoir/cap unit) is shaped to allow the user (or medical technician or other authorized person) to insert the cap 504 (or base/reservoir/cap unit) into the reservoir receptacle 32 without the user also pushing the button portion 608. For example, in such embodiments, the cap 504 (or base/reservoir/cap unit) may have an outer surface that is tapered to a smaller diameter toward the bottom end of the cap 504 (or base/reservoir/cap unit) relative to the upper end, such that the tapered outer surface engages the inner surface of the curved portion 503 and pushes the U-shaped member 602 toward the second position as the cap 504 (or base/reservoir/cap unit) is moved further into the reservoir receptacle 32 in the direction of axis A.
In particular embodiments, the return force of the bias member 612 and the shapes of the curved portion 603 and the groove 505 are configured to provide a snap-fit action between the U-shaped member 602 and the groove 505. In such embodiments, the curved portion 603 and the groove 505 are configured to provide an audible or tactile (or both) snap sound or feel (or both) that is perceptible to the user (or medical technician or other authorized person) as the user (or medical technician or other authorized person) inserts the cap 504 (or base/reservoir/cap unit) into the reservoir receptacle 32. The snap-fit action provides the user (or medical technician or other authorized person) with an audible or tactile (or both) indication that the cap 504 (or base/reservoir/cap unit) has been sufficiently or properly received within the reservoir receptacle 32.
The cap 504 (or base/reservoir/cap unit) may be removed from the reservoir receptacle 32 by pushing the button portion 608 to move the U-shaped member 602 toward the second position, to withdraw the curved portion 503 from the groove 505 by a sufficient amount to allow the user to pull the cap 504 (or base/reservoir/cap unit) out of the reservoir receptacle 32. With the button portion 608 pushed, the user (or medical technician or other authorized person) pulls the cap 504 (or base/reservoir/cap unit) in the direction of the axis A, out of the reservoir receptacle 32. In particular embodiments, no twisting or rotational motion on the cap 504 is needed to remove the cap 504 (or base/reservoir/cap unit) from the reservoir receptacle 32.
In particular embodiments, the reservoir receptacle 32 of the infusion pump device 30 includes a spring or other bias member that imparts a bias force on the cap 504 or the reservoir 1 in the direction of the axis A and outward from the reservoir receptacle 32, when the base/reservoir/cap unit is installed in the reservoir receptacle 32. In such embodiments, the spring or bias member may be similar to the spring or bias member described above with respect to the cap 404. The bias force causes a surface (lower surface in
The embodiment shown in
For example, in the embodiment represented by
In embodiments that employ two or more U-shaped members 602, 602′, etc., the cap 504 includes a corresponding number (two or more) grooves 505 in cap 504. In such embodiments, each U-shaped member 602, 602′, etc., is arranged to align with and be received in a different respective one of the grooves 505, when the cap 504 (or base/reservoir/cap unit) is properly installed in the reservoir receptacle 32, as described above. In that state, the two or more U-shaped members 602, 602′, etc. inhibit removal of the cap 503 (or base/reservoir/cap unit) from the reservoir receptacle 32. From that state, the button portions 608, 608′, etc. of each of the U-shaped members 602, 602′, etc., may be operated simultaneously (manually pushed at the same time), to move the U-shaped members 602, 602′, etc. toward their respective second positions. As a result, the curved portion 603 of each U-shaped member 602, 602′, etc. withdraws from its corresponding groove 505 by a sufficient amount to allow the user to pull the cap 504 (or base/reservoir/cap unit) out of the reservoir receptacle 32.
In the embodiment of
Embodiments described with reference to
In particular embodiments, the U-shaped member 602 is provided with one or more detectable elements 42 described above. In embodiments that employ multiple U-shaped members 602, 602′, etc., a plurality of those U-shaped members (or each of the multiple U-shaped members) may be provided with one or more detectable elements described above. For example, one or more detectable elements 42 may be provided on the curved portion 603, the button portion 608 or any one (or both) of the linear portions 605 of the U-shaped member 602, 602′, etc.
In such embodiments, the infusion pump device 30 may include one or more corresponding sensor elements 32 described above, arranged to detect the detectable elements 42, for example, when the U-shaped member (602, 602′, etc.) is in one or more of the first position, the second position or other positions between the first and second position, to detect the position of the U-shaped member relative to the housing of the infusion pump device 30. In further embodiments, the detectable element(s) 42 and sensor element(s) are arranged such that one or more sensor elements detect one or more detectable elements, if the curved portion 603 of the U-shaped member is received within the groove 505 of the cap 504.
In further examples of such embodiments, one or more additional detectable elements 42 are provided on the cap 504 (or other portion of the base/reservoir/cap unit), and one or more further sensor elements 32 are arranged on the infusion pump device 30 to detect those detectable elements 42 if the cap 504 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32 of the infusion pump device 30 (or not properly received within the reservoir receptacle 32). Accordingly, the electronics 60 in those embodiments may be configured to determine whether or not the cap 504 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32 and properly engaged with the U-shaped member (602, 602′, etc.), based at least in part on signals provided by sensor elements 32.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 504 (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the curved portion 603 of the U-shaped member is not properly received within the groove 505 of the cap 504. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 504 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) a determination that the curved portion 603 of the U-shaped member is received within the groove 505 of the cap 504. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
d. Twist-Lock with Push Button Release
In other embodiments as described with reference to
In particular embodiments, the one or more resilient extensions 700 are flexible to selectively disengage the stop surfaces sufficiently to allow removal of the cap (or base/reservoir/cap unit) from the reservoir receptacle 32. For example, in
Each extension 700 has an engagement portion 702 that is configured to engage a respective sloped or ramped section 32c on the inner surface 32b of the reservoir receptacle 32, when the cap 700 (or base/reservoir/cap unit) is initially moved into the reservoir receptacle 32. In
The ramped sections 32c are configured to align with the engagement portions 702 of the extensions 700 on the cap 704, when the cap 704 (or base/reservoir/cap unit) is initially received within the reservoir receptacle. The cap 704 (or base/reservoir/cap unit) is configured to be rotated in a first direction (e.g., the direction of arrow 706 in
The extensions 700 are configured to continue to ride along the surfaces of the ramp sections 32c and flex inward until the extensions 700 align with and engage the stop surfaces 32d. When engaged with the stop surfaces 32d, the resilient extensions 700 retain and lock the cap (or base/reservoir/cap unit) within the reservoir receptacle. In the embodiment of
In particular embodiments, the extensions 700, engagement portions 702 and the stop surfaces 32d (or both) are made of materials that have sufficient rigidity to secure the cap 704 to the infusion pump device 30 when the engagement portions 702 are in the indentations of the stop surfaces 32d, but sufficiently flexible and resilient to allow the engagement portion 702 to be snapped into indentations of the stop surfaces 32d. In such embodiments, as the cap 704 is rotated, the engagement portions 702 ride along the ramp portion 32c as the extensions 700 flex, until the engagement portions 702 align with and snap into the indentations of the stop surfaces 32d. In particular embodiments, the cap 704 is configured to provide a snap sound or snap-like feel that is perceptible to a person installing the cap 704 (or base/reservoir/cap unit) in the reservoir receptacle 32.
When engaged with the indentations of the stop surfaces 32d, the resilient extensions 700 inhibit removal of the cap 704 (or base/reservoir/cap unit) from the reservoir receptacle 32 of the infusion pump device 30. However, from the state shown in
In the embodiment of
In particular embodiments, the cap 704 includes one or more alignment features 710 that align with one or more corresponding or mating features 712 located on the infusion pump device 30, in the region of the port of the reservoir receptacle 32, to align the cap 704 in one or more predefined rotated positions relative to the axis A, when the cap 704 (or base/reservoir/cap unit) is initially received in the reservoir receptacle 32. The one or more predefined positions are locations at which the engagement portions 702 of the extensions 700 engage the ramp portion 32c, at or near the first location 32c′, when the cap 704 (or base/reservoir/cap unit) is initially received by the reservoir receptacle 32.
Accordingly, the cap 704 (or base/reservoir/cap unit) may be installed in the infusion pump device 30 by inserting cap 704 (or base/reservoir/cap unit) through the open port of the reservoir receptacle and manually aligning the alignment features 710 and 712, as shown in
As discussed above, the cap 704 (and base/reservoir/cap unit) may be removed from the reservoir receptacle 32 by manually pressing all of the button members 708 at the same time, to flex the extensions 700 inward to withdraw the engagement portions 702 from the indentations sufficient to allow the cap 704 (and base/reservoir/cap unit) to be manually pulled outward (along the direction of the axis A) from the reservoir receptacle 32.
In the embodiment of
The cap 704 may be made of any one or more suitable materials having sufficient rigidity and strength to operate as described herein, including, but not limited to plastic, metal, ceramic, composite or other suitable material. In one example, the cap 704 (including the resilient extensions 700, grip 705, port 707 and the cap body) is made of a molded plastic material, as a single, unitary, molded structure. In other embodiments, the cap 704 may be made by other processes or in multiple parts that are assembled together (or both).
In the embodiment of
In the embodiment of
The embodiment of
In the embodiment of
Embodiments described with reference to
In particular embodiments, one or more (or all) of the extensions 700 of the cap is provided with one or more detectable elements 42 described above. In such embodiments, the infusion pump device 30 may include one or more corresponding sensor elements 32 described above, arranged to detect the detectable elements 42, for example, when extensions 700 are engaged with the ramp portion 32c, or when the extensions are engaged with the stop surface 32d, or when the extensions are flexed (or any combination thereof). In further embodiments, one or more (or all) of the tabs or other alignment features 710 is provided with one or more detectable elements 42 described above. In such embodiments, the infusion pump device 30 may include one or more corresponding sensor elements 32 described above, arranged to detect the detectable elements 42, for example, when alignment features 710 on the cap 704 are properly aligned with or mated with corresponding alignment features on the infusion pump device 30.
In further examples of such embodiments, one or more additional detectable elements 42 are provided on the cap 704 (or other portion of the base/reservoir/cap unit), and one or more further sensor elements 32 are arranged on the infusion pump device 30 to detect those detectable elements 42 if the cap 704 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32 of the infusion pump device 30 (or not properly received within the reservoir receptacle 32). Accordingly, the electronics 60 in those embodiments may be configured to determine whether or not the cap 704 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, or whether or not the extensions 700 are properly engaged with the stop surfaces 32d, or both.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 704 (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the extensions 700 are not properly received within the indentations of the stop surfaces 32c. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 704 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) a determination that the extensions 700 are properly received within the indentations of the stop surfaces 32c. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
e. Push-in Lock with Pinch Release
In other embodiments as described with reference to
The cap 804 includes a body portion 803 configured to couple to a reservoir 1 (for example, with a first releasable coupler as described above, or other suitable coupling structure), and to fit at least partially within the reservoir receptacle 32, when the cap 804 (or base/reservoir/cap unit) is installed within the reservoir receptacle 32 (for example, as described above with respect to caps 4, 204, 404, 504, 604 and 704, or in another suitable manner). The skirt portion 802 of the cap 804 extends over the outside of a body portion 803 of the cap 804 and has one end (the end of the skirt portion 802 that is adjacent to the reservoir-coupling end of the body portion 803 of the cap 804) that is open to a space 806 between the interior surface 802a of the skirt portion 802 and the exterior surface 803a of the body portion 803.
When the cap 804 (or base/reservoir/cap unit) is installed in the reservoir receptacle 32, the body portion 803 of the cap 804 fits at least partially within the reservoir receptacle 32 (for example, as described above with respect to caps 4, 204, 404, 504, 604 and 704, or in another suitable manner) while the skirt portion 802 extends at least partially over the outside of the open port of the reservoir receptacle 32. In particular, when the cap 804 (or base/reservoir/cap unit) is installed in the reservoir receptacle 32, an end portion of the port of the reservoir receptacle 32 fits at least partially into the space 806 between the skirt portion 802 and the body portion 803 of the cap 804.
In the embodiment in
The shape and size of the skirt portion 802 and of the engagement features (slots) 800 are configured to allow the skirt portion 802 to fit over the end of the port of the reservoir receptacle 32 when the skirt portion 802 is expanded in the second dimension D2 (for example, by manually squeezing the skirt portion 802 in the first dimension D1). In the expanded (squeezed) state, the skirt portion 802 of the cap 804 may be fitted over the end portion of the port of the reservoir receptacle 32 as the cap 804 (or base/reservoir/cap unit) is moved into the reservoir receptacle 32.
Once the cap 804 (or base/reservoir/cap unit) is sufficiently inserted into the reservoir receptacle 32, the skirt portion 802 may be returned to its unexpanded state (for example, by releasing the manual squeezing force on the skirt portion 802). As the skirt portion 802 returns to the unexpanded, the engagement features (slots) 800 on the skirt portion 802 engage and receive the engagement feature (lip) 39 around the port of the reservoir receptacle 32. In that state, the cap 804 (or base/reservoir/cap unit) is retained and locked in the reservoir receptacle 32, in an operating position.
From that state, the cap 804 (or base/reservoir/cap unit) may be removed from the reservoir receptacle 32, by applying a squeezing force on the skirt portion 802 in the first dimension D1 to cause the skirt portion 802 to expand in the second dimension D2 to withdraw the engagement features (slots) 800 from the engagement feature (lip) 39 by a sufficient amount to unlock the cap 804 and allow the cap 804 (or base/reservoir/cap unit) to be manually pulled out of the reservoir receptacle 32.
In the embodiment of
The cap 804 may be made of any one or more suitable materials having sufficient rigidity and strength to operate as described herein, including, but not limited to plastic, metal, ceramic, composite or other suitable material. In one example, the cap 804 (including the resilient skirt portion 802) is made of a molded plastic material, as a single, unitary, molded structure. In other embodiments, the cap 804 may be made by other processes or in multiple parts that are assembled together (or both).
In the embodiment of
The embodiment of
In the embodiment of
In the embodiment of
Embodiments described with reference to
In particular embodiments, the skirt portion 802 of the cap 804 is provided with one or more detectable elements 42 described above. In such embodiments, the infusion pump device 30 may include one or more corresponding sensor elements 32 described above, arranged to detect the detectable elements 42, for example, when engagement features 800 are engaged with the engagement features 39, or when the skirt portion 802 is extended over the port end of the reservoir receptacle 32, or when the port end of the reservoir receptacle 32 is received within the space 806 (or any combination thereof).
In further examples of such embodiments, one or more additional detectable elements 42 are provided on the cap 804 (or other portion of the base/reservoir/cap unit), and one or more further sensor elements 32 are arranged on the infusion pump device 30 to detect those detectable elements 42 if the cap 804 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32 of the infusion pump device 30 (or not properly received within the reservoir receptacle 32). Accordingly, the electronics 60 in those embodiments may be configured to determine whether or not the cap 804 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, engagement features 800 are engaged with the engagement features 39, or whether or not the skirt portion 802 is extended over the port end of the reservoir receptacle 32.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 804 (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, (2) a determination that the engagement features 800 are not sufficiently engaged with the engagement features 39, and (3) a determination that the skirt portion 802 is not sufficiently extended over the port end of the reservoir receptacle 32. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 804 (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, (2) a determination that the engagement features 800 are engaged with the engagement features 39, and (3) a determination that the skirt portion 802 is extended over the port end of the reservoir receptacle 32. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
f. Pinch to Connect and Release
In further embodiments as described with reference to
Each flexible arm 900 has a free end portion 900a and extends (at a second end portion 900b) from the rest of the housing 905 in a cantilever manner. In the embodiment of
Each flexible arm 900 has a tab 902 that extends outward (radially outward relative to the axis A) from the free end portion 900a of the flexible arm 900. The tab 902 is shaped to engage or fit into a correspondingly shaped indentation, opening, groove, stop surface or other engagement structure in the reservoir receptacle 32 of the infusion pump device 30, when the cap 904a (or base/reservoir/cap unit) is installed in the reservoir receptacle 32. In the embodiment in
The upper ring member 910 may be attached to the reservoir receptacle 32 in any suitable attachment mechanism including, but not limited to, welding, glue, resin or other adhesive material, screw threads, friction fit, or the like. The upper ring member 910 may be made of any suitably rigid material, such as but not limited to plastic, metal, ceramic, composite material or combinations thereof. In particular embodiments, the upper ring member 910 corresponds to (or is) the upper ring member 94 discussed above with respect to the embodiment in
In particular embodiments, each flexible arm 900 is formed integral with the housing 905 of the cap 4, for example, by being molded with the rest of the housing 905. In such embodiments, the housing 905 of the cap 904a (and, thus, each flexible arm 900) is made of a material having sufficient rigidity to hold a shape and operate as described herein, and sufficient flexibility and resiliency to allow each flexible arm 900 to flex inward and return to an un-flexed state, as described herein. In other embodiments, each flexible arm is a separate element relative to the housing 905 of the cap 904a and is attached to the housing 905 by any suitable attachment mechanism including, but not limited to one or more welds, adhesives, screws, bolts, clamps or the like.
In the embodiment of
In the embodiment of
In particular embodiments, a locking mechanism is provided on one or more (or each) of the flexible arms 900, or within one or more (or each) of the gaps 903, to selectively lock the associated flexible arm 900 from flexing inward. In particular embodiments, the locking mechanism is configured to selectively lock the flexible arm 900, when the tab 902 is engaged with the engagement member (e.g., the aperture 908) in the infusions pump device 30, to inhibit removal (e.g., accidental or unauthorized) removal of the cap 904a (or base/reservoir/cap unit) from the reservoir receptacle 32. In such embodiments, the locking mechanism is also configured to selective unlock the flexible arm 900 and allow the flexible arm to flex, to release the tab 902 from the engagement member. In the embodiment of
Movement of the lock member 912 is controlled by any suitable mechanism, including, but not limited to an manual lever, magnetic actuator, electronic solenoid or the like. In particular embodiments, the lock member 912 is (or includes) a magnetic or magnetically attractable material that magnetically interacts with an electromagnet or a moveable magnet located on or adjacent the outer surface of the cap 904a. The electromagnet is selectively energized (or the moveable magnet is selectively moved) to cause the lock member 912 to move between locked and unlocked positions (solid and broken line positions in
Embodiments described with reference to
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 904a (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, (2) a determination that the tabs 902 are not sufficiently engaged with the engagement members 908, and (3) a determination that the lock member 912 is in an unlocked position. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 904a (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, (2) a determination that the tabs 902 are engaged with the engagement members 908, and (3) a determination that the lock member 912 is in a locked position. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
g. Pivot to Release
In a further embodiment as described with reference to
From that state, one end (the upper end in
In a further embodiment as described with reference to
From that state, one end (the lower end in
In particular embodiments, one or more detectable elements 42 are arranged on the pivot member(s) 911, 913 or 920, or on the bias members 916, 918 and 922 (or all). In such embodiments, electronics (such as electronics 60) may be configured to detect the relative position of the pivot member(s) or bias member, in addition to or as an alternative to detection of the presence of the cap 904b or 904c (or base/reservoir/cap unit) or other characteristics and information as described above.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 904b or 904c (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the pivot member(s) 911, 913 or 920 are not sufficiently engaged with the groove or indentation 32e or 904c′. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 904b or 904c (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) a determination that the pivot member(s) 911, 913 or 920 are sufficiently engaged with the groove or indentation 32e or 904c′. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
In a further embodiment as described with reference to
h. Push-in Lock with Biased Ball Members
In the embodiment in
In particular embodiments, the ball members 930 are biased toward the interior of the reservoir receptacle 32 (toward the axis A), by one or more bias members. In the embodiment in
A lip 938 is provided on the inner-facing end of the receptacle 936, to retain the ball member 930 within the tapered collar of the receptacle 936. The ball member 930 is held within the receptacle 936, but is biased, by the bias member 934, against the lip 938, such that a portion of the ball member 930 extends out of the upper ring member 932, toward the interior of the reservoir receptacle 32. In particular embodiments, the ball member 930 extends into the interior of the reservoir receptacle 32 by a sufficient distance to engage the outer surface of the cap 904 and be received within the groove 904d′, when the cap 904d (or base/reservoir/cap unit) is received within the reservoir receptacle 32.
When biased against the lip 938, the ball member 930 is spaced from the tapered surface of the receptacle 936, but is moveable toward the tapered surface (against the force of the bias member), when a suitable force is applied to the outward extended portion of the ball member.
Accordingly, as the cap 904d (or base/reservoir/cap unit) is inserted into the reservoir receptacle 32, the ball members 930 engage and slide or ride along the outer surface of the cap 904d, until the ball members 930 engage and are received within the groove 904′ of the cap 904d. The groove 904d′ and the ball members 930 are arranged relative to each other, so that the ball members 930 engage and are received within the groove 904d′, when the cap 904d (or base/reservoir/cap unit) reaches its fully installed position within the reservoir receptacle 32.
When engaged with the outer surface of the cap 904 and outside of the groove 904′, the ball members 930 are pushed against the bias force of the bias members 934, and move further into the receptacle 936. However, when the ball members 930 are received within the groove 904d′, the ball members move under the bias force of the bias members 934, toward their extended position. This action causes a portion of the ball members 934 to extend into the groove 904d′, to retain the cap 904d (and base/reservoir/cap unit) in the installed position within the reservoir receptacle 32. To remove the cap 904d (and base/reservoir/cap unit) from an installed position within the reservoir receptacle 32, manual force can be applied to pull the cap 904d outward from the reservoir receptacle 32 with sufficient force to overcome the bias force of the bias members 934 on the ball members 930 and force the ball members 930 further into the receptacle 936.
In the embodiment of
In the embodiment of
Embodiments described with reference to
In particular embodiments, one or more detectable elements 42 are arranged on a ball member 930, or on a bias member 934 (or both). In such embodiments, electronics (such as electronics 60) may be configured to detect the relative position of the ball member(s) or bias member(s), in addition to or as an alternative to detection of the presence of the cap 904d (or base/reservoir/cap unit) or other characteristics and information as described above.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap 904d (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the ball member(s) 930 are not sufficiently engaged with the groove 904d′. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: 1) a determination that the cap 904d (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) a determination that the ball member(s) 930 are sufficiently engaged with the groove 904d′. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
i. Rotatable Ring Lock and Release
In a further embodiment as described with reference to
The rotatable ring member 940 is connected to the infusion pump device 30, but is mounted for rotation around the axis A of the reservoir receptacle 32 (and of the cap 904e and base/reservoir/cap unit when installed in the reservoir receptacle 32). For example, an annular edge portion of the rotatable ring member 940 fits within an annular groove in the inner wall of the reservoir receptacle 32 (or in an upper ring member attached thereto), where the groove is dimensioned to receive the annular edge portion of the rotatable ring member 940 and allow rotation of the rotatable ring member 940 about the axis A, relative to the infusion pump device 30. In other embodiments, the rotatable ring member 940 may be mounted for rotation by other suitable rotary coupling mechanisms.
In particular embodiments, the rotatable ring member 940 is formed of a plate having a generally annular shaped portion 941 with a central opening 942 and one or more (or a plurality of) cutouts or slots 943 extending radially outward from the edge of the central opening 942. The embodiment of
The central opening 942 in the rotatable ring member 940 is dimensioned match or correspond to the outer dimension of a body portion 904e′ of the cap 904e, to allow the body portion 904e′ to pass through the central opening 942, when the cap 904e is inserted into the reservoir receptacle 32, in the direction of the axis A. The cap 904e also includes one or more (or a plurality of) tab portions 904e″ extending radially outward from the body portion of the cap 904e. In particular embodiments, the number of tab portions 904e″ is equal to or less than the number of cutouts or slots 943 in the rotatable ring 940.
The tab portions 904e″ are shaped to align with and fit through the cutouts or slots 943, when the cap 904e (or base/reservoir/cap unit) is inserted into the reservoir receptacle 32. In particular embodiments, the tab portions 904e″ also align with and fit in corresponding grooves or slots 946 in the inner surface of the reservoir receptacle 32 (or in an inner surface of an upper ring member attached to the reservoir receptacle 32). In such embodiments, a separate groove or slot 946 in inner wall of the reservoir receptacle 32 is associated with each different one of the cutouts or slots 943 and aligns with a respective one of the cutouts or slots 943, when the cap 904e (or base/reservoir/cap unit) is inserted into the reservoir receptacle 32. When the cap 904e (or base/reservoir/cap unit) is fully inserted into the reservoir receptacle 32 such that the tap portions 904e″ have passed through the cutouts or slots 943 in the rotatable ring 940, the tab portions 904e″ are abutted against a stop surface or shelf on an interior surface 948 of the reservoir receptacle 32.
Once the cap 904e (or base/reservoir/cap unit) is sufficiently inserted into the reservoir receptacle 32 such that the tab portions 904e″ (having passed through the cutouts or slots 943) are located on the stop surface or shelf 948, the rotatable ring member 940 may be rotated to move the cutouts or slots 943 out of alignment with the grooves or slots 946. When the cutouts or slots 943 out of alignment with the grooves or slots 946 (while the tabs 904e″ are within the grooves or slots 946, the cap 904e is retained within the reservoir receptacle by the rotatable ring member 940. To release the cap 904e, the rotatable ring member 940 is manually rotated, as described above, to align the cutouts or slots 943 with the grooves or slots 946. When so aligned, the cap 904e may be manually pulled out from the reservoir receptacle 32, such that the tabs 904e pass back through the cutouts or slots 943 as the cap 904e (or base/reservoir/cap unit) is withdrawn from the reservoir receptacle 32.
In particular embodiments, the body portion 904e′ of the cap 904e includes one or more (or a plurality of) seal members 947 for sealing against a surface 948 in the reservoir receptacle 32. In the embodiment of
In particular embodiments, only caps (such as cap 904e) that have tab portions (such as 904e″) that are equal or less in number and arranged in a corresponding pattern as the cutouts or slots 943 in the rotatable ring member 940 are able to be installed within the reservoir receptacle 32 that has the rotatable ring 940. In such embodiments, other caps (not shown) have tab portions that are greater in number or arranged in a different pattern (or both) than the cutouts or slots 943 in the rotatable ring member 940 and, thus, are not able to fit within the reservoir receptacle 32 of the infusion pump device 30 shown in
While the embodiment in
In a further embodiment as described with reference to
In the embodiment in
A moveable pin or locking member 956 is supported by the housing 33 of the infusion pump device 30 for movement between an extended position (shown in
The moveable locking member 956 has a protrusion or extension 956b that engages the groove or rib feature 954 of the rotatable ring member 950. In
The moveable locking member 956 is configured to engage a groove, indentation or other stop surface on a cap (or base/reservoir/cap unit), when the cap (or base/reservoir/cap unit) is installed in the reservoir receptacle 32 and the moveable locking member 956 is in the extended position (of
Accordingly, in the embodiment of
To remove the cap (or base/reservoir/cap unit) from the reservoir receptacle, the rotatable ring member 950 is rotated to the position shown in
Embodiments described with reference to
In particular embodiments, one or more detectable elements 42 are arranged on the rotatable ring member 940 or 950, on the tabs 904e″, on the moveable locking member 956 or on the bias member 957 (or any combination thereof). In such embodiments, electronics (such as electronics 60) may be configured to detect the relative position of the rotatable ring member, tabs, moveable locking member or bias member, in addition to or as an alternative to detection of the presence of the cap (or base/reservoir/cap unit) or other characteristics and information as described above.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the rotatable ring member, movable locking member or bias member is not in a locking position. Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) a determination that the rotatable ring member, movable locking member or bias member is in a locking position. Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
j. Pawl Push-In Lock With Pinch Release
In a further embodiment as described with reference to
For example, in the embodiment of
Also in the embodiment of
In the embodiment of
In particular embodiment, the pawls 960 have an engagement surface 963 that is configured to engage a further engagement surface 966 on the stop surface 962. The diameter of the body 965 of the cap 964 (at least at the open end of the cap 964) is dimensioned such that the stop surface 964 of each pawl 960 engages the engagement surface 966 of the stop surface 962, when the cap body 965 is placed over the open end of the reservoir receptacle 32. Once the engagement surfaces 963 and 966 are engaged, further movement of the cap 964 toward the reservoir receptacle 32 causes the engagement surface 966 to force the pawls 960 radially outward, as the cap 4 (or base/reservoir/cap unit) is moved toward an installed position with respect to the reservoir receptacle 32. The flexible material of the body 965 of the cap 964 allows the pawls 960 to move radially outward under the force of the engagement surface 966, as the cap 4 (or base/reservoir/cap unit) is moved further toward the installed position, until the pawls 960 clear (pass) the engagement surface 966. Once the pawls 960 clear (pass) the engagement surface 966, the resiliency of the material of the cap body 965 causes the cap body 965 to contract slightly in the dimension in which the pawls 960 are located, so that the pawls 960 move (or snap) back toward each other, to engage the housing 33 of the infusion pump device 30, below the stop surface 962. In that arrangement, the pawls 960 retain the cap 4 on the housing 33 of the infusion pump device 30.
From the installed position (shown in
In the embodiment in
Embodiments described with reference to
In particular embodiments, one or more detectable elements 42 are arranged on the pawls 960. In such embodiments, electronics (such as electronics 60) may be configured to detect the relative position of the pawls 960, in addition to or as an alternative to detection of the presence of the cap (or base/reservoir/cap unit) or other characteristics and information as described above.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the pawls 960 are not in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) determination that the pawls 960 are in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
k. Push-in Lock with Expandable Ring Member
In a further embodiment as described with reference to
In the embodiment of
The ring member 970 is held within the reservoir receptacle 32 and, in particular embodiments, is fixed to the interior surface of the reservoir receptacle 32 (or to an upper ring member attached to the upper end of the reservoir receptacle). The ring member 970 may be secured to the housing 33 of the infusion pump device 30 (or upper ring member) by any suitable securing mechanism and, in particular embodiments, is keyed with the housing 33 of the infusion pump device 30 to inhibit rotation of the ring member 970 relative to the housing 33. In the illustrated embodiment, the ring member 970 includes a key tab or protrusion 976 that fits within a correspondingly shaped key slot or indentation 978 in the housing 33 of the infusion pump device 30, to inhibit rotation of the ring member 970. In other embodiments, the placement of the key tab and the key slot is reversed, such that the key tab is on the housing 33 and the key slot is on the ring member 970. In other embodiments, other suitable keyed engagement features are provided on the ring member 970 and the housing 33 of the infusion pump device 30, to inhibit rotation of the ring member 970.
In the embodiment of
The tapered section 972a of the engagement feature 972 is configured to fit into and through the gap 973, as the cap 974 (or base/reservoir/cap unit) is moved into the reservoir receptacle 32, toward an installed position. The tapered shape of the tapered section 972a helps to align the tapered section 972a with the gap 973 (and to align the cap 974 or base/reservoir/cap unit in a proper installation alignment position with the infusion pump device 30. The widest end of the tapered section 972a (the end closes to the port 6 end of the cap 4) has a stop surface 972c that engages the ring member 970, after the tapered section 972a passes through the gap 973. The stop surface 972c, when engaged with the ring member 970, inhibits removal of the cap 974 (or base/reservoir/cap unit) from the reservoir receptacle 32. When the tapered section 972a is passed through the gap 973, the linear section 972b of the engagement feature is disposed within the gap 973 and inhibits rotation of the cap 974 (and base/reservoir/cap unit) relative to the ring member 970 (and, thus, relative to the infusion pump device 30).
In the embodiment of
In particular embodiments, the ring member 970 is provided with one or more arms or levers (not shown) or other features that are manually operable by a user to selectively expand the gap 973. In such embodiments, once the cap 974 (or base/reservoir/cap unit) has been installed in the reservoir receptacle 32 such that the engagement feature 972 has passed through the gap 973 in the ring member 970, the ring member 970 may be selectively expanded (with manual force on the arms or levers) to allow the cap 974 to be manually pulled outward from the reservoir receptacle 32 to remove the cap 974 (or base/reservoir/cap unit) from the reservoir receptacle 32.
Embodiments described with reference to
In particular embodiments, one or more detectable elements 42 are arranged on the ring member 970 or the engagement feature 972 (or both). In such embodiments, electronics (such as electronics 60) may be configured to detect the relative position of the ring member 970 or engagement feature 972, in addition to or as an alternative to detection of the presence of the cap (or base/reservoir/cap unit) or other characteristics and information as described above.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the ring member 970 or engagement feature 972 is not in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) determination that the ring member 970 or engagement feature 972 is in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
l. Slot and Tab Connection
In a further embodiment as described with reference to
An upper ring member 982 is configured to fit over the open end of the reservoir receptacle 32 and includes threads 983 (or other suitable connection structure) to secure to the outer surface of the housing 33 of the infusion pump device 30, adjacent the open end of the reservoir receptacle 32, for example. The upper ring member 982 may be made of any suitably rigid material such as, but not limited to a generally rigid plastic, metal, ceramic, wood or composite material, or any combination thereof. The upper ring member 982 includes a central opening 982a through which at least a portion of the cap 984 (or base/reservoir/cap unit) pass, as the cap 984 (or base/reservoir/cap unit) is installed in or withdrawn from the reservoir receptacle 32. The upper ring member 982 also includes a ledge or lip portion 982b that surrounds the central opening 982a and overlaps and abuts at least a portion of the compressible ring member 980.
The threads 983 on the upper ring member 982 are arranged to threadingly engage corresponding threads 986 on the outer surface of the housing 33 of the infusion pump device 30, around the open end of the reservoir receptacle 32. Accordingly, the upper ring member 982 secures to the housing 33 of the infusion pump device 30 (via threads 983 and 986, or other suitable connection structure) and helps retain the compressible ring member 980 within the groove or notch 981 in the reservoir receptacle 32. Furthermore, as described herein the upper ring member 982 may be rotated about the axis A in a first direction and selectively threaded further onto the housing 33 to selectively compress the compressible ring member 980 between the ridge or lip 982b of the upper ring member 982 and the groove or notch 981 in the reservoir receptacle 32. From that state, the upper ring member 982 may be rotated about the axis A in a second direction opposite to the first direction, to selectively de-compress the compressible ring member 980.
When the compressible ring member 980 is in an uncompressed state (as shown in
When the compressible ring member 980 is in a compressed state (as shown in
In particular embodiments, one or both of the upper ring member 982 and the compressible ring member 980 is provided with one or more (or a plurality) of notches or slots 988 and 987, respectively, that have a shape and size that receive a corresponding one or more (or a plurality) of tabs or protrusions 989 on the body 985 of the cap 984. In the illustrated embodiment, the upper ring member 982 and the compressible ring member 980, each have two slots, while the cap 984 has two corresponding tabs 989. In other embodiments, more than two slots and tabs may be provided on the respective components. In yet other embodiments, the locations of the slots and tabs are reversed, such that the slots are on body 985 of the cap 984 and the tabs or projections are on the upper ring member 982 and the compressible ring member 980. The slots and tabs help to align the cap 984 (and base/reservoir/cap unit) in a predefined rotational position relative to the axis A, during installation or removal of the cap 984 (or base/reservoir/cap unit) in or from the reservoir receptacle 32. Accordingly, the slots and tabs may be arranged to orient the cap 984 (and base/reservoir/cap unit) in a proper rotational or angular orientation relative to the axis A, when the cap 984 (or base/reservoir/cap unit) is installed in the reservoir receptacle 32.
In a further embodiment as described with reference to
In the embodiment of
In the embodiment of
To install the cap 994 (or base/reservoir/cap unit) in the reservoir receptacle 32, The cap 994 (or base/reservoir/cap unit) is moved along the direction of the axis A, through the opening 990 in the upper ring member 990. As the cap 994 is moved along the direction of the axis A, the cap 994 is manually rotated about the axis A to align the tabs 991 on the cap 994 with the slots 990c in the upper ring member 990, so that the tabs 991 pass through the slots 990c. Once the tabs 991 pass through the slots 990c, the tabs 991 engage the shelf 996 and inhibit further movement of the cap 994 into the reservoir receptacle 32, until the tabs 991 are aligned with the open ends of the channels 997. More specifically, once the tabs are engaged with the shelf 996, the cap 994 is manually rotated further manually rotated about the axis A, while the tabs ride along the top of the shelf 996, to align the tabs 991 with the open ends of the channels 997. In particular embodiments, one or more protrusions, walls or other features 998 is provided at one or more locations along the shelf 996, to be engaged by the tabs 991 and stop further rotational motion of the cap 994 (or base/reservoir/cap unit) in one direction around the axis A. The stop feature(s) 998 inhibit further rotation in one direction, to help the user align the tabs 991 with the open ends of the channels 997.
Once the tabs 991 are aligned with the open ends of the channels 997, the cap 994 (and base/reservoir/cap unit) is manually moved in the direction of axis A, further into the reservoir receptacle 32, toward a fully installed position. As shown in
When the tabs 991 reach the lower end of the channels 997, the cap 994 (and base/reservoir/cap unit) is in the fully installed position within the reservoir receptacle 32. In particular embodiments, the lower end of the channels 997 includes a further recess or stop surface that is engaged by the tabs 991, when the tabs reach the lower end of the channels 997, and provides tactile feedback to the user, indicating that the tabs 991 have reached the end of the channels 997 (and the cap or base/reservoir/cap unit is in the fully installed position).
From the fully installed position, the cap 994 (and base/reservoir/cap unit) may be removed from the reservoir receptacle by manually rotating the cap 994 about the axis A in a direction to cause the tabs 991 to follow the channels 997 toward the open end of the channels 997, while simultaneously pulling the cap 994 outward from the reservoir receptacle 32. When the tabs 991 reach the open ends of the channels 997, the cap 994 is further manually rotated about the axis A to align the tabs 991 with the slots 990c. Once the tabs 991 are aligned with the slots 990c, further pulling of the cap 994 outward from the reservoir receptacle 332 causes the cap 994 (and base/reservoir/cap unit) to be withdrawn from the reservoir receptacle 332, through the opening 990a in the upper ring member 990.
In the embodiment of
In other embodiments, the legs 999 are omitted and the tabs 991 are arranged on the body 995 of the cap 994. In such embodiments, the channels 997 may be located in the upper ring member 990 (instead of the housing 33 of the infusion pump device 30), and the lip 990b of the upper ring member 990 may be omitted, as shown in
In the embodiments of
Embodiments described with reference to
In particular embodiments, one or more detectable elements 42 are arranged on the tabs 989, compressible ring member 980, or upper ring member 982. In such embodiments, electronics (such as electronics 60) may be configured to detect the relative position of the tabs 989, compressible ring member 980 or upper ring member 982, in addition to or as an alternative to detection of the presence of the cap (or base/reservoir/cap unit) or other characteristics and information as described above.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the tabs 989, compressible ring member 980 or upper ring member 982 is not in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) determination that the tabs 989, compressible ring member 980, or upper ring member 982 is in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
m. Spring Connection
In a further embodiment as described with reference to
In the illustrated embodiment, each moveable member 1000 is located within a groove, depression, or indentation 1003 in an interior wall portion of the reservoir receptacle 32. In the illustrated embodiment, the grooves, depressions, or indentations 1003 are provided in the housing 33 of the infusion pump device. In other embodiments, the grooves, depressions, or indentations 1003 (and the moveable members 1000 and bias members 1002) are located in an upper ring member (not shown) that connects to the upper end of the housing 33 at the reservoir receptacle 32, for example, similar to the manner in which other upper ring members described herein connect to the housing 33.
Each moveable member 1000 is arranged to engage and contact a flexible spring member 1006 on the outer surface of the body 1005 of a cap 1004, when the cap 1004 (or base/reservoir/cap unit) is moved into the reservoir receptacle 32, in the direction of the axis A. The flexible spring member 1006 is connected to the cap body 1005 and extends away from the open end (lower end in
In particular embodiments, one or more pairs of spring members 1006 are arranged on the cap body 1005 such that the two spring members 1006 in each pair are located on opposite sides of the axis A relative to each other. In such embodiments, the two spring members 1006 in a given pair provide radially-directed spring forces in opposite directions, to help retain the cap 1004 (or base/reservoir/cap unit) stable within the reservoir receptacle. In yet other embodiments, each different cap 1004 has a different arrangement of spring members 1006 (e.g., a different number or pattern of locations on the cap body 1005) with respect to other caps 1004, where the different arrangements correspond to different respective characteristics of the cap 1004 (or base/reservoir cap unit or infusion set connected thereto), as described above with respect to other embodiments having different features corresponding to different characteristics.
In the embodiment of
From the installed position, the cap 1004 (or base/reservoir/cap unit) may be selectively withdrawn from the reservoir receptacle, by selectively moving the moveable members 1000 radially outward a sufficient distance to allow the spring member(s) 1006 to pass by the moveable members 1000, while applying a manual force to pull the cap 1004 in the direction of axis A, outward from the reservoir receptacle 32. In particular embodiments, a mechanism for selectively moving the moveable members 1000 radially outward is provided in the housing 33 of the infusion pump device 30, where such mechanism may include, but is not limited to, a magnetic or electromagnetic solenoid, a manually movable lever on the bias members 1002 or other suitable mechanism.
The moveable members 1000 are configured with a first surface facing toward the open end of the reservoir receptacle (facing upward in
In particular embodiments, one or more seal members 1008 is provided on the cap 1004, for example, around the perimeter of the cap body 1005, adjacent to the open end of the cap body 1005. In such embodiments, the one or more seal members 1008 are configured to contact and seal against an interior surface of the reservoir receptacle 32, when the cap 1004 (or base/reservoir/cap unit) is installed within the reservoir receptacle 32. The seal member 1008 may be any suitable seal structure including, but not limited to an O-ring or band of seal material as described herein.
Embodiments described with reference to
In particular embodiments, one or more detectable elements 42 are arranged on the tabs 991, legs 999, moveable members 1000, bias members 1002 or spring members 1006. In such embodiments, electronics (such as electronics 60) may be configured to detect the relative position of the tabs 991, legs 999, moveable members 1000, bias members 1002 or spring members 1006, in addition to or as an alternative to detection of the presence of the cap (or base/reservoir/cap unit) or other characteristics and information as described above.
In such embodiments, electronics 60 in the infusion pump device may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is not properly received within the reservoir receptacle 32, and (2) a determination that the tabs 991, legs 999, moveable members 1000, bias members 1002 or spring members 1006 are not in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of stopping or inhibiting pumping operation, allowing only a limited pumping operation, providing a warning message, and recording data indicating the detection.
Alternatively or in addition, the electronics 60 may be configured to provide one or more predefined operations, at least partially based on (or in response to) one or more of: (1) a determination that the cap (or base/reservoir/cap unit) is properly received within the reservoir receptacle 32, and (2) determination that the tabs 991, legs 999, moveable members 1000, bias members 1002 or spring members 1006 is in a locking position (or cap-installed position). Such predefined operations include, but are not limited to one or more of allowing or providing pumping operation, allowing a predefined pumping operation, providing a predefined message, and recording data indicating the detection.
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
n. Push-Fit With Spring-Loaded Reservoir or Cap
In further examples of any of the embodiments described herein, the reservoir receptacle 32 of the infusion pump device 30 may include a spring or other bias member (such as bias member 1000 in
In such further examples, the cap includes a latching or locking structure to latch or lock the cap to the infusion pump device 30, against the bias force of the spring or other bias member, when the cap (or base/reservoir/cap unit) is fully and properly received in the reservoir receptacle 32. Various examples of such latching or locking structure are described herein, where a predefined manual action can be carried out to selectively unlatch or unlock the cap (or base/reservoir/cap unit) from a latched or locked state, to allow the cap (or base/reservoir/cap unit) to be withdrawn from the reservoir receptacle 32. In particular embodiments, when the cap (or base/reservoir/cap unit) is in a latched or locked state, the force of the spring or other bias member helps to lock and maintain the cap (and base/reservoir/cap unit) in a predefined position within the reservoir receptacle 32.
According to certain embodiments, the spring or other bias member is configured such that the cap (or base/reservoir/cap unit) is at least partially ejected from the reservoir receptacle 32 by the force of the spring or other bias member, upon unlatching or unlocking of the cap (or base/reservoir/cap unit) from the latched or locked state. By partially ejecting the cap (or base/reservoir/cap unit) from the reservoir receptacle 32, the reservoir 1, 201, 301 is moved out of operative alignment with the drive mechanism within the reservoir receptacle 32 and, thus, will not be operated by the infusion pump device (unless and until the cap or base/reservoir/cap unit is again placed in a latched or locked state). Alternatively or in addition, by partially ejecting the cap (or base/reservoir/cap unit) from the reservoir receptacle 32, the cap (or base/reservoir/cap unit) can be easier to manually grip to further withdraw the cap (or base/reservoir/cap unit) from the reservoir receptacle 32.
In the embodiment of
In the embodiment of
In further example embodiments, as shown in
In
In the embodiments of
o. Other Connection Configurations
In other embodiments, the second releasable coupler includes one or more other features, that engage and mate with one or more other features on the housing of the infusion pump device 30, in the region of the open port of the reservoir receptacle 32. In particular embodiments, the infusion pump device 30 is provided with an electronic solenoid device that selectively moves a solenoid plunger from a first position to a second position, when energized (or when de-energized). In such embodiments, the second releasable coupler includes one or more grooves, indentations, apertures, projections or other stop surfaces on the cap (e.g., cap 4, 404, 504, 704, 804 or on any other suitable cap configurations) that are arranged to engage with the solenoid plunger, when the solenoid plunger is in the second position (i.e., when the solenoid is energized, or de-energized, to move the plunger to the second position). When engaged with the stop surface on the cap, the solenoid plunger locks and retains the cap within the reservoir, When the solenoid plunger is in the second position, the plunger is withdrawn from the stop surface on the cap by an amount sufficient to unlock the cap from the reservoir receptacle and allow the cap to be removed from the reservoir receptacle (e.g., by manually pulling the cap in the direction of axis A, out of the reservoir receptacle 32).
p. Side-Loading Reservoir Receptacle
In various embodiments described above, the reservoir receptacle 32 of the infusion pump device 30 has an end opening (an open end) through which the axis A extends, for receiving a cap (or base/reservoir/cap unit) inserted into the open end of the reservoir receptacle, along the direction of the axis A. In further embodiments, the housing 33 of the infusion pump device 30 has a side opening into the reservoir receptacle 32 for receiving, from the side, a cap (or base/reservoir/cap unit), such as any of the caps (or base/reservoir/cap units) described herein, or other suitable cap (or base/reservoir/cap unit). In such embodiments, the cap 4 (or base/reservoir/cap unit) is inserted in a direction transverse (for example, generally perpendicular) to the axis A, through an open side of the reservoir receptacle 32.
For example, in the embodiment of
The cap 1014 has a raised port end 1016 (for example, corresponding the port 6 end of the cap 4 in
In the embodiment of
In the illustrated embodiment, the slot-shaped opening 1020 extends across at least a portion of the diameter of the reservoir receptacle 32, and traverses the axis A of the reservoir receptacle 32. The slot-shaped opening 1020 has a width dimension that is smaller than its length dimension, so as to form an elongated, rectangular opening through the portion 1018 of the housing 33, into the reservoir receptacle 32. The slot-shaped opening 1020 is configured to receive the raised port end 1016 of the cap 1014, when the cap 1014 (or base/reservoir/cap unit) is received, through the side opening 1013, into the reservoir receptacle. As shown in
In embodiments as shown in
In such embodiments, a first face or dimension of the raised port end 1016 of the cap 1014 is wider than the width of the slot-shaped opening 1020, while the width of a second face or dimension of the raised port end 1016 is smaller than the width of the slot-shaped opening 1020. Accordingly, in such embodiments, the slot-shaped opening 1020 can help control the rotational or angular orientation of the cap 1014 (or base/reservoir/cap unit) relative to the axis A, when the cap 1014 (or base/reservoir/cap unit) is received within the reservoir receptacle 32. In addition, the portion 1018 of the housing 33 can help retain the cap 1014 (and base/reservoir/cap unit) from movement in the axial direction A relative to the housing 33 of the infusion pump device, when the cap 1014 (or base/reservoir/cap unit) is received within the reservoir receptacle 32.
In other embodiments as shown in
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
In further examples of any of the embodiments described herein, the cap (e.g., cap 4, 404, 504, 704, 804, 904a-e, 964, 974, 984, 994, 1004, 1014, or other suitable cap) is provided with one or more vent openings (such as vent openings 24 described above with respect to cap 4). The vent opening(s) 24 provide one or more air passages from the environment outside of the cap, to the interior volume of the cap body. Accordingly, when the cap (or base/reservoir/cap unit) is installed in a reservoir receptacle 32, the vent opening(s) provide an air flow passage or pressure equalization passage between the environment outside of the cap and infusion pump device, to the environment within the reservoir receptacle 32 (i.e., the volume between the base/reservoir/cap unit and the interior wall of the reservoir receptacle 32, when the base/reservoir/cap unit is received within the reservoir receptacle 32).
In particular embodiments, the vent opening(s) 24 include a hydrophobic material that inhibits the passage of water or other liquid through the vent opening(s). For example, the hydrophobic material may be provided as a membrane over one or both open ends (interior and exterior ends) of each vent opening, or within vent opening. In other embodiments, an absorbent material is provided in or adjacent each vent opening to absorb or wick away liquid that may drop or accumulate on the surface of the cap or the port of the reservoir receptacle 32.
In those or other embodiments, a wiper structure that wipes any residual liquid off of the surface of the reservoir when the reservoir is disengaged from a transfer guard (e.g., transfer guard 200 or 300 described herein), or engaged with a cap (e.g., any of the caps described herein).
An example embodiment of a vent configuration in a cap 1024 is described with reference to
A cut-away view of a cap 1024 is shown in
In addition, a first annular array of weld horns 1034 (or other attachment mechanisms) is provided around and concentric with the annular groove 1030. In particular embodiments, a second annular array of weld horns 1036 (or other attachment mechanisms) is provided between the annular groove 1030 and the inner port opening 1032, and concentric with the annular groove 1030 (and, thus, concentric with the first annular array 1036). In further embodiments, the second annular array of weld horns 1036 (or other attachment mechanisms) may be omitted.
The first and second annular arrays 1034 and 1036 secure a membrane 1038 to the inner surface of the cap 1024, over the annular groove 1030 and vent openings 1028. In particular, the first and second annular arrays 1034 and 1036 fix the membrane 1038 to the inner surface of the cap 1024 in two concentric, annular attachment zones on either side of the annular groove 1030. In particular embodiments, the membrane 1038 is made of (or coated with) a hydrophobic material that repels water, but allows the passage of air.
When affixed to the inner surface of the cap 1024, the membrane 1038 covers the groove 1030, but is separated from the vent openings 1028 by the depth of the annular groove 1030. Accordingly, the annular groove 1030 provides an unobstructed, annular air flow path between the membrane 1038 and the inner surface of the cap 1024. The vent openings 1028 are arranged around and in air flow communication with the annular air flow path in the annular groove 1030.
The membrane 1038 includes a central opening 1038a that aligns with the inner port opening 1032 when the membrane 1038 is attached to the inner surface of the cap 1024. In other embodiments, the central portion of the membrane 1038 does not include a central opening 1038a, but, instead, is configured to be pierced by a needle of the infusion set 50, when the infusion set tubing 52 is attached to the port 1026.
In particular embodiments, the first and second arrays of weld horns (or other attachment mechanisms) comprises arrays of ultrasonic weld horns. In such embodiments, the membrane is secured to the inner surface of the cap 1024 by pressing the membrane 1038 against the arrays of weld horns and applying ultrasonic energy to the weld horns sufficient to weld the membrane to the cap 1024. In other embodiments, other suitable attachment mechanisms may be employed including, but not limited to a glue or other adhesive material.
When secured to the inner surface of the cap 1024, the membrane 1038 allows the passage of air, but inhibits the passage of moisture through the vents 1028. The annular groove 1030 enhances the air flow through the vent openings 1028 and membrane 1038, by increasing the surface area of the membrane 1038 exposed to the air flow path (relative to a membrane arranged directly over the vent openings 1028).
While embodiments described above include vent openings and membranes located on caps (e.g., cap 1024), other embodiments described with reference to
In the embodiment of
In the drawing of
In particular embodiments, each vent opening 1042 is covered with a membrane 1038, as described above. The membrane 1038 may be provided on the interior surface of the upper ring member 1040 (the surface facing into the central opening 1040a), and covering over the vent opening 1042. In other embodiments, the membrane 1038 is provided on the exterior surface of the upper ring member 1040 (the surface facing outward relative to the axis A), and covering over the outside of the vent opening 1042. In yet other embodiments, the membrane 1038 is provided inside of the vent opening 1038 flush with or recessed from one or both of the interior surface and exterior surface of the upper ring member 1040.
In various embodiments described above, the cap 4 (or cap 204, 404, 504, 704, 804, 904a-4, 1050, 974, 984, 994, 1004, 1014, 1024, or other cap as described herein) includes or operates with a hollow needle (such as needle 9) that pierces a septum in the reservoir 1, to provide a fluid flow path between the interior of the reservoir 1 and the tubing 52. Other embodiments employ a needle-free connection between the cap and the reservoir, an example of which is shown in
The cap 1050 includes a cap body having a rounded end portion 1050a. The rounded end portion 1050a of the cap body has an outer surface that has a semi-spherical or semi-spheroidal shape, with the second open end 1052b of the passage 1052 located at the apex of the semi-spherical or semi-spheroidal shape. The cap body has a port portion 1050b (the upper portion of the cap 1050 in
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
In the embodiment of
In particular embodiments, the annular seal structure 1054 includes an O-ring, band, or other suitable seal, made of silicon rubber or other suitable, flexible sealing material. The annular seal structure 1054 is arranged around the inner periphery of an inner surface of the reservoir 1, either at or a selected distance below the open end of the reservoir 1 (for example, in a head or neck portion of the reservoir 1, where the head or neck portion of the reservoir 1 has a smaller diameter than the rest of the body of the reservoir 1). In particular embodiments, the inner surface of the reservoir 1 (or of the head or neck portion of the reservoir 1) is provided with an annular groove 1056a, rib or ridge 1056b, or both (or other retaining surface) that abuts the annular seal structure 1054 and helps retain the annular seal structure 1054 in a fixed location within the reservoir 1.
In the embodiment of
In this manner, the cap 1050 is pivotal between an open position in which the rounded end portion 1050a is located outside of the reservoir 1, and a closed position in which the rounded end portion 1050a is located at least partially within the reservoir 1 and abutted against the seal structure 1054. When in the closed position, the cap 1050 provides a fluid-tight seal with the seal structure 1054 in the reservoir 1, to seal the cap 1050 to the reservoir 1. In particular embodiments, one or more latches, clips or other securing mechanisms are provided on the cap 1050, the reservoir 1, or both, to selectively secure the cap 1050 in the closed position, to inhibit accidental or unauthorized opening of the cap 1050 from the closed position on the reservoir 1. In other embodiments, the rounded end portion 1050a and the seal structure 1054 provide a friction fit sufficient to retain the cap 1050 in a closed position.
In particular embodiments, the ridge portion 1050c of the body of the cap 1050 is configured to be located outside of the reservoir 1 (and, in some embodiments, to abut an upper edge of the reservoir 1 around the open end of the reservoir 1) when the cap 1050 is in a closed position relative to the reservoir 1. In such embodiments, the ridge portion 1050c has an outer peripheral edge with a diameter that is greater than the outer diameter of the opening in the open end of the reservoir 1, so that the ridge portion 1050c overlaps the upper edge of the reservoir 1, when the cap 1050 is in a closed position. In further embodiments, one or more seals may be arranged on one or both of the ridge portion 1050c and the upper edge of the reservoir 1, to provide a fluid seal between the ridge portion 1050c and the upper edge of the reservoir 1, when the cap 1050 is in a closed position.
In the embodiment of
Moreover, in the representative drawing figures of embodiments of the present invention throughout this specification, the cap 4 may be illustrated without a reservoir 1 for sake of simplicity; however, it is known to those skilled in the art that the cap 4 may be coupled with the reservoir 1 according to embodiments of the present invention.
In various embodiments described herein, a reservoir 1 may be filled (partially or completely) with an infusion media prior to being coupled with a cap (or in a base/reservoir/cap unit). The infusion media may be any suitable fluid capable of being dispensed from an infusion pump device (such as, but not limited to infusion pump device 30) or other delivery device. In particular embodiments, the infusion media includes insulin or an insulin formulation for treatment of diabetes. In other embodiments, the infusion media includes other suitable substances or formulations for medicinal, therapeutic, or other purposes including, but not limited to a formulation for treatment of cancer, human immunodeficiency virus (HIV), acquired immunodeficiency syndrome (AIDS), or other disease or condition.
In particular embodiments, a transfer guard device is employed to connect a vial or other container of infusion media to the reservoir, to transfer fluidic media from the vial or other container to the reservoir. An example embodiment of a transfer guard device 1060 is described with reference to
The transfer guard device 1060 is configured to selectively connect a vial 1062 or other container of fluidic media to a reservoir 1, to transfer fluidic media from the vial 1062 to the reservoir 1 (to fill the reservoir 1 partially or completely with the fluidic media). The vial 1062 or other container may contain any suitable fluidic media, including, but not limited to the examples of infusion media described herein.
The transfer guard device 1060 is configured to be connected to a reservoir 1 and to a vial 1062 or other container for and during a filling operation. In particular embodiments, the transfer guard device 1060 is configured to inhibit disconnection (accidental or unauthorized disconnection) of the transfer guard device 1060 from the reservoir, prior to completion of a filling operation. As such, accidental or unauthorized spilling of fluidic media from the vial 1062 or other container onto the top of the reservoir 1 (or elsewhere) can be avoided or minimized. The transfer guard device 1060 is configured to disconnect from the reservoir 1 (or from the reservoir 1 and the vial 1062), after completion of a fill operation, to allow the reservoir 1 to be coupled with a cap (for example, in a base/reservoir/cap unit) as described herein.
With reference to
The transfer guard 1060 also includes a fluid channel formed of one or more hollow needle or tube structures 1068 arranged to connect in fluid communication with the reservoir 1 and the vial 1062 or other container, when the port end of the reservoir 1 and the port end of the vial 1062 or other container are received in the first and second enclosures 1064 and 1066, respectively. In particular embodiments, the fluid channel includes a hollow needle structure having a first sharp end 1068a arranged to pierce a septum in the reservoir 1 and be in fluid flow communication with the interior of the reservoir 1, when the port end of the reservoir 1 is fully received within the first enclosure 1064.
The first enclosure 1064 fits over a base 1070 attached to the reservoir 1 (where the base 1070 may be similar to base 2 described herein, but with apertures as described below). In particular embodiments, the base 1070 is mounted to the port end of the reservoir 1 in a non-rotational manner (such that the base 1070 is not allowed to rotate relative to the reservoir 1). Also in particular embodiments, the first enclosure 1064 attaches to the port end of the reservoir 1, by a rotational motion (e.g., rotating in one direction, such as, but not limited to a clockwise direction) around the axis AAA. Similarly, the first enclosure 1064 detaches from the port end of the reservoir 1, by a rotational motion (e.g., rotating in a second direction, such as, but not limited to a counterclockwise direction) around the axis AAA. In such embodiments, the first enclosure 1064 and the port end of the reservoir 1 (or the base 1070 on the port end of the reservoir 1) is provided with a rotatable connection structure, such as, but not limited to screw threads, a slot and tab structure or other suitable structure that allows the first enclosure 1064 and the port end of the reservoir 1 to selectively connect and disconnect by relative rotary motion between those parts (i.e., rotary motion about the axis AAA).
The one or more hollow needle or tube structures 1068 of the fluid channel includes a second sharp end 1068b arranged to pierce a septum in the vial 1062 or other container, and be in fluid flow communication with the interior of the vial 1062 or other container when the port end of the vial 1062 or other container is fully received within the second enclosure 1066. In particular embodiments, the second enclosure 1066 fits over the port end of the vial 1062 or other container and is configured to connect to the port end of the vial 1062 or other container by snap or friction fit.
The transfer guard device 1060 includes a section 1071 connecting the first and second enclosures 1064 and 1066 together. The one or more hollow needle or tube structures 1068 of the fluid channel extends through the section 1071. In addition, one or more (or a plurality) of movable members 1072 are arranged on or along the length of the section 1071. In particular embodiments, each moveable member 1072 includes a pin, post or plate of suitably rigid material that is supported by the first and second enclosures 1064 and 1066 for selective movement in the longitudinal direction of the axis AAA.
In the embodiment in
More specifically, prior to the port end of the vial 1062 or other container being received within the second enclosure 1066 (as shown in
Accordingly, when each moveable member 1072 is in a first position shown in
However, when the moveable members 1072 are in the second position shown in
Therefore, accidental or unauthorized removal of the transfer guard 1060 from the reservoir 1 is inhibited, as long as the port end of the vial 1062 or other container is fully received within the enclosure 1066. The transfer guard 1060, thus, can provide additional safety and prevent undesired disconnection of the reservoir 1, while the vial 1062 or other container is connected in flow communication with the fluid channel 1068 in the transfer guard 1060.
The transfer guard device 1060 and components thereof may be made of any suitably rigid material having sufficient rigidity and strength to operate as described herein, including, but not limited to plastic, metal, ceramic, wood, composite material, or the like, or any combination thereof. While various embodiments described herein may employ a transfer guard 1060 to fill a reservoir prior to installation of the reservoir in an infusion pump device 30, other embodiments employ other suitable mechanisms and procedures for filling reservoirs, or employ pre-filled reservoirs.
While the description above refers to particular embodiments of the present invention, it will be understood that many modifications may be made without departing from the spirit thereof. The accompanying claims are intended to cover such modifications as would fall within the true scope and spirit of the present invention. The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
This application is a Continuation of U.S. patent application Ser. No. 15/896,904, filed Feb. 14, 2018, which is a Continuation of U.S. patent application Ser. No. 15/655,815, filed Jul. 20, 2017, U.S. Pat. No. 9,931,459, granted Apr. 3, 2018, which is a Continuation of U.S. patent application Ser. No. 15/344,442, filed Nov. 4, 2016, U.S. Pat. No. 9,744,290, granted Aug. 29, 2017, which is a Continuation of U.S. patent application Ser. No. 14/803,944, filed Jul. 20, 2015, U.S. Pat. No. 9,517,299, granted Dec. 13, 2016, which is a Divisional of U.S. patent application Ser. No. 14/801,503, filed Jul. 16, 2015, U.S. Pat. No. 9,452,255, granted Sep. 27, 2016, incorporated herein by reference in their entirety and claim priority of U.S. Provisional Patent Application Nos. 62/027,019, filed Jul. 21, 2014; 62/087,445, filed Dec. 4, 2014; 62/150,064, filed Apr. 20, 2015; 62/159,504, filed May 11, 2015, which are incorporated herein by reference in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| 62027019 | Jul 2014 | US | |
| 62087445 | Dec 2014 | US | |
| 62150064 | Apr 2015 | US | |
| 62159504 | May 2015 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 14801503 | Jul 2015 | US |
| Child | 14803944 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15896904 | Feb 2018 | US |
| Child | 16184839 | US | |
| Parent | 15655815 | Jul 2017 | US |
| Child | 15896904 | US | |
| Parent | 15344442 | Nov 2016 | US |
| Child | 15655815 | US | |
| Parent | 14803944 | Jul 2015 | US |
| Child | 15344442 | US |
